Details have been soft (obviously), but Tim Cook reiterated that new Mac Pros were coming, and from his prior statements it would seem a total redesign may hit early to mid year. This leaves us with a bit of a speculation window as to what may be offered hardware-wise.
Processor options:
Consumer Haswell will be out sometime in the spring of 2013. Most likely, the Xeon E3 will get an update within that time frame. However, Xeon E5, which will be the Mac Pro's only option will not arrive until 2014. This puts a Haswell Mac Pro out of the launch window.
In fact, an Ivy Bridge based E5 still hasn't been launched and isn't expected until the middle of next year. If we do see a Mac Pro in early 2013 it will likely be running Sandy Bridge.
Using Apple's current product line, we can develop a general road map as to what processor will be offered for each Mac Pro tier:
Single CPU Option:
W3565 (Quad-core 3.2Ghz, MSRP ~$500) to E5-1620 (Quad 3.8Ghz turbo, MSRP ~$300)
A high frequency, quad, uni E5 is the most likely choice for the entry level position. The E5 is still sandy-bridge based and an Ivy Bridge version is not supposed to come out until mid-2013. If an Ivy does make it into the Mac Pro, look for a 10% performance increase over the SB equivalent. An E3 will most likely not be found due to a different socket type.
Performance*: The E5-1620 would be 1.98x faster than the W3565.
Upgrades: The next tier would be the E5-1650 (6-core, 3.6Ghz turbo, MSRP ~$600) at 2.3x the speed of the W3565.
Double CPU Option:
E5645 (2x6-core, 2.4Ghz, MSRP ~$600 each) to E5-2630 (2x6-core, 2.3Ghz, MSRP ~$600 each)
The E5-2630 slots into the previous price point nicely while providing a generous performance boost. The only option here is, again, Sandy Bridge with Ivy Bridge being mid-2013.
Performance: The E5-2630's are around 1.3x faster than the out going E5645 units. The new E5-2630's are around the same performance as the previous top of the line build (X5675's.) The E5-2630's are 3.72x more powerful than the entry level 5.1 Mac Pro with a W3565.
Upgrades: The next price point up would take the Mac Pro into the 16-core range with the E5-2650 (2x8-core, 2Ghz) being the next appropriate point. Performance would be up 1.56x compared to the E5645 and 1.37x the performance of the current Mac Pro's mid-level upgrade option (X5650). The grand-daddy, most expensive option would probably be the E5-2670 (2x8-core, 2.6Ghz, MSRP ~$1500 each), which would be 1.81x more powerful than the E5645 base model dual cpu system and 1.34x more powerful than the highest end option in the current Mac Pro (X5675). The E5-2680 would be much more powerful, but its power requirements are quite a bit higher than the E5-2670, so it probably will not be offered.
Logicboard + ports
The major upgrades will be USB 3.0 support and thunderbolt ports. I also wouldn't be surprised if we saw more USB ports. My bet is that we see:
Front: 2x USB 3.0, 1x Firewire 800, 1x Thunderbolt, 1x headphone
Back: 4x USB 3.0, 2x Firewire 800, 1x Thunderbolt, optical in and out, analog in and out, 2x Gigabit ethernet, Dual-link DVI, 2x Display-port. Maybe HDMI since the MacBook Pro saw such an addition depending on videocard. Kepler will be here in full force, so HDMI is definitely likely.
The logicboard itself will of course be LGA2011 and will support 32 and 64GB setups like before, with the potential to be expanded to 64/128GB using 16GB sticks.
GPUs:
Kepler is the only choice and is already supported in ML.
We will probably see the Nvidia 650 being offered as the base model. With the option to upgrade to a 660 or 670. The dual card option may be dropped and support for Quadro cards added. I'd look for Dual-link DVI with two display ports, with the slight possiblity of HDMI out.
Memory:
Memory will likely be unchanged other than a slight speed boost and a bump to the minimum amount offered. Base line memory will be upped to 8GB and support for 1066mhz memory will likely go away. Apple will most likely standardize the option to only include 1600mhz ECC. Other possibilities are to include a 16GB single stick option. This would raise the max memory for a single cpu Mac Pro to 64GB and the dual CPU's to 128GB. This amount of RAM is supported easily by the CPU's, however there may be other issues on Apple's end.
Storage:
I don't see Apple increasing the hard drive rack size to include over four 3.5" units, but we may see a 4+2 situation where they have 4x 3.5" bays + 2x 2.5" bays or even 4x2.5" bays for SSDs. With the possibility of losing the optical bay, that would free up space to expand storage. I'd love to see a 4+4 situation, as I'm sure Apple would too so they could sell more of their high margin SSDs and HDDs.
We will definitely see the Fusion drive offered as well as 3TB and maybe a 4TB option. More SSD options will likely be available ranging from 256 to 512GB. Price will likely stay sky high with the 256 being a $300 option and the 512Gb moving down to around $650.
Optical:
I doubt we will see the optical drive go away completely, but Apple will probably step back from the two slot drive and offer either an Optical drive or an expansion rack for 2x 2.5" slots. They may forgo optical all together and offer the external superdrive during check out instead.
Chassis:
The chassis may undergo a decent redesign. The top wings may be removed to either tighten the package or increase the internal size without making the case phyically larger. Optical drives may disappear. Apple may embrace the 140mm fan option to be quieter and to push more volume. I wouldn't be surprised to see 2.5" specific mounting options crop up within the case.
Black aluminum case anyone?
Definitely a long post. Can't wait to see what Apple finally has in store for us.
*Note: performance was judged using Passmark
Processor options:
Consumer Haswell will be out sometime in the spring of 2013. Most likely, the Xeon E3 will get an update within that time frame. However, Xeon E5, which will be the Mac Pro's only option will not arrive until 2014. This puts a Haswell Mac Pro out of the launch window.
In fact, an Ivy Bridge based E5 still hasn't been launched and isn't expected until the middle of next year. If we do see a Mac Pro in early 2013 it will likely be running Sandy Bridge.
Using Apple's current product line, we can develop a general road map as to what processor will be offered for each Mac Pro tier:
Single CPU Option:
W3565 (Quad-core 3.2Ghz, MSRP ~$500) to E5-1620 (Quad 3.8Ghz turbo, MSRP ~$300)
A high frequency, quad, uni E5 is the most likely choice for the entry level position. The E5 is still sandy-bridge based and an Ivy Bridge version is not supposed to come out until mid-2013. If an Ivy does make it into the Mac Pro, look for a 10% performance increase over the SB equivalent. An E3 will most likely not be found due to a different socket type.
Performance*: The E5-1620 would be 1.98x faster than the W3565.
Upgrades: The next tier would be the E5-1650 (6-core, 3.6Ghz turbo, MSRP ~$600) at 2.3x the speed of the W3565.
Double CPU Option:
E5645 (2x6-core, 2.4Ghz, MSRP ~$600 each) to E5-2630 (2x6-core, 2.3Ghz, MSRP ~$600 each)
The E5-2630 slots into the previous price point nicely while providing a generous performance boost. The only option here is, again, Sandy Bridge with Ivy Bridge being mid-2013.
Performance: The E5-2630's are around 1.3x faster than the out going E5645 units. The new E5-2630's are around the same performance as the previous top of the line build (X5675's.) The E5-2630's are 3.72x more powerful than the entry level 5.1 Mac Pro with a W3565.
Upgrades: The next price point up would take the Mac Pro into the 16-core range with the E5-2650 (2x8-core, 2Ghz) being the next appropriate point. Performance would be up 1.56x compared to the E5645 and 1.37x the performance of the current Mac Pro's mid-level upgrade option (X5650). The grand-daddy, most expensive option would probably be the E5-2670 (2x8-core, 2.6Ghz, MSRP ~$1500 each), which would be 1.81x more powerful than the E5645 base model dual cpu system and 1.34x more powerful than the highest end option in the current Mac Pro (X5675). The E5-2680 would be much more powerful, but its power requirements are quite a bit higher than the E5-2670, so it probably will not be offered.
Logicboard + ports
The major upgrades will be USB 3.0 support and thunderbolt ports. I also wouldn't be surprised if we saw more USB ports. My bet is that we see:
Front: 2x USB 3.0, 1x Firewire 800, 1x Thunderbolt, 1x headphone
Back: 4x USB 3.0, 2x Firewire 800, 1x Thunderbolt, optical in and out, analog in and out, 2x Gigabit ethernet, Dual-link DVI, 2x Display-port. Maybe HDMI since the MacBook Pro saw such an addition depending on videocard. Kepler will be here in full force, so HDMI is definitely likely.
The logicboard itself will of course be LGA2011 and will support 32 and 64GB setups like before, with the potential to be expanded to 64/128GB using 16GB sticks.
GPUs:
Kepler is the only choice and is already supported in ML.
We will probably see the Nvidia 650 being offered as the base model. With the option to upgrade to a 660 or 670. The dual card option may be dropped and support for Quadro cards added. I'd look for Dual-link DVI with two display ports, with the slight possiblity of HDMI out.
Memory:
Memory will likely be unchanged other than a slight speed boost and a bump to the minimum amount offered. Base line memory will be upped to 8GB and support for 1066mhz memory will likely go away. Apple will most likely standardize the option to only include 1600mhz ECC. Other possibilities are to include a 16GB single stick option. This would raise the max memory for a single cpu Mac Pro to 64GB and the dual CPU's to 128GB. This amount of RAM is supported easily by the CPU's, however there may be other issues on Apple's end.
Storage:
I don't see Apple increasing the hard drive rack size to include over four 3.5" units, but we may see a 4+2 situation where they have 4x 3.5" bays + 2x 2.5" bays or even 4x2.5" bays for SSDs. With the possibility of losing the optical bay, that would free up space to expand storage. I'd love to see a 4+4 situation, as I'm sure Apple would too so they could sell more of their high margin SSDs and HDDs.
We will definitely see the Fusion drive offered as well as 3TB and maybe a 4TB option. More SSD options will likely be available ranging from 256 to 512GB. Price will likely stay sky high with the 256 being a $300 option and the 512Gb moving down to around $650.
Optical:
I doubt we will see the optical drive go away completely, but Apple will probably step back from the two slot drive and offer either an Optical drive or an expansion rack for 2x 2.5" slots. They may forgo optical all together and offer the external superdrive during check out instead.
Chassis:
The chassis may undergo a decent redesign. The top wings may be removed to either tighten the package or increase the internal size without making the case phyically larger. Optical drives may disappear. Apple may embrace the 140mm fan option to be quieter and to push more volume. I wouldn't be surprised to see 2.5" specific mounting options crop up within the case.
Black aluminum case anyone?
Definitely a long post. Can't wait to see what Apple finally has in store for us.
*Note: performance was judged using Passmark