Next week we'll see new retina iMac, keyboard, mouse and touchpad. No invitation has been sent to a launch event. At best, Apple informs on Monday that on Tuesday morning they're gonna air a special announcement from their HQ (like they did with first gen. aluminum iMac's). IF they do that, there is a change that they'll introduce other updates too.. and that could be news about nMP update.
Unfortunately, I think the desktop mac lineup at the end of the year is going to be a letdown. The only rumors pertain to an update to the 21" iMac. I predict that only the 21" iMac gets updated to a 4k display, and the rest of the lineup frustratingly stagnates until early next year.
Part of the problem is Intel's slow rollout of their new chips and how the fit into the mac lineup. Also a problem is thunderbolt 3. This may be the biggest limiting factor, as Apple probably does not want to release one of their high end configurations without it at this point. Lets take a look at whats available and what may be holding up each update.
iMac 21": Likely getting broadwell chips with intel iris pro graphics. Why? Apple wants to drop the discrete graphics card and these intel chips have fairly good integrated graphics. Why not skylake? Intel has not announced any skylake chips with iris pro graphics. Since this is a low end configuration, if this model does not have thunderbolt 3, its probably not a big deal.
iMac 27": Skylake desktop parts exist for this line, but it seems that their availability is limited. That coupled with limited availability of thunderbolt 3 controllers probably keeps this one from being updated this year. It would not surprise me if this one is updated, but all the rumors have focused only on the 21" configuration.
Mac Pro: Haswell-E currently exists as a CPU replacement, but Broadwell-E is close on the horizon. Current rumors have it pegged for release 3/2016. While I am not convinced this chip will bring enough performance over Haswell-E to wait for, its probably close enough now to release that Apple will wait for it. Suitable GPUs exist for the mac pro in AMD's Fiji based chips. Future GPUs are farther out on the horizon, with rumors pointing to a new GPU from Nvidia in the first half of 2016 and AMD not until the second half. Probably the reason the mac pro has been held up is again Thunderbolt 3. Apple would not release a mac pro until its ready, as the mac pro is basically a thunderbolt machine.
I think Apple will refresh much of their high end lineup simultaneously with thunderbolt 3. While I thought this would happen this fall, there will probably be a mac focused event early next year which sees new macbook pros, iMac 5k and mac pro. My guess would be in february or march.
i don't ever see a nmp being sold by apple with one GPU.. it's a dual-gpu design at a very low level of the process.. it's meant to have 2 gpus
I agree with this, the Mac Pro is designed around 2 GPUs, and thats not going to change. What I think is important is I think software is moving closer and closer to those 2 GPUs functioning as a single big GPU. I believe this is a capability of metal, although it would be great if someone could clarify this for me.
What would I like to see? Either lower the price on the low end configuration or increase the capabilities of the base configuration. Make the quad core CPU $2500, or make the base $3000 configuration have 6 cores. Make 16 GB the base memory configuration and a 512 GB SSD upgradeable up to 2 TB. Also, support for an Apple external 5k display, which I assume is coming with thunderbolt 3.