I am beginning to think that the mac pro line will just be slowly killed by apple and that it will breath its last at WWDC 2013 much like the xserve

Well Tim Cook has already said that a new Mac Pro is coming this year... So don't get upset just yet.
This WWDC will tell the future of Apple. If they can't pull a rabbit out of their hat they are done.
I don't recall a time Apple has ever shipped something when people where expecting they would ship it,
Even though nothing is expected until the second half of this year,
people will once again complain about how Apple has "laughed in the face of pro users" and that "Apple doesn't care about pros" by not mentioning the Mac Pro at WWDC.
What if they had a system called "The Mac". i7 based, user expandable, lots of effort put into low power consumption, then above that, the Mac Pro, a Xeon based multi-CPU equivalent with a higher price tag?
That would suit a LOT of people where the void between the £750 BTO Mac Mini and the £2099 Mac Pro
Xeon versus i7 doesn't drive any price points. If match basic performance the i7 options largely approximately the same basic price points as the Xeon options. ( E3 roughly equivlaent to mainstream Core i5-i7 offerings. Top end Core i7 offerings being equivalent to E5 1600 ones ).
The power saving is far more motivated on the mainstream offerings being on new architecture and process ( v3 , Haswell) as the others being on older ( v2 , Ivy Bridge). All of Intel's CPU offerings are getting more power effiecient over time. Picking a specific line doesn't do all that much more than another. It is different parallel performance points selecting.
There is no void there. It is filled by the iMac. Can hand wave as it doesn't exist but it does. Relative to how many do match to the iMac there is not "a LOT" of people in that gap. There is constant moaning and groaning but there is little unbiased quantitative evidence that this is large.
The is a gap Apple could close between upper end iMac ($1999) and entry Mac Pro ( $2,499) but all the way down to the mini... there isn't an empty gap.
For the entire G3 to G5 range BEFORE they switched to Intel chips there was always an entry level, expandable desktop system and at the same time, a Cube/Mac Mini and some flavour of iMac in the "MID range".
New Macs have been like clockwork in June/July for last several years. Intel is on a somewhat regular schedule ( relatively early roadmaps are typically by a quarter but even that error bar is almost predictable). That puts at least some Macs at a midyear release point. Which specific Mac has varied a bit but some Mac has been pretty regular in June for a while.
iOS and now OS X updates are relatively predicatble with +/- two months or so. Again they are being anchored WWDC and Apple's move to incremental deployment software development methodology. Yearly drops with incremental updates and less "big bang" 18-24 month updates.
Expected by whom? Pretty sure EU customers expected there would be a Mac Pro for sale this time of year. Apple is actually way off expectations. That is way there is more than usual moaning and groaning then normal about Mac Pro product management.... because it is whacked. It is way, way off for a normal Apple product.
Sure lots of that is just as predictable as iPod refresh dog and pony show in September.
Not necessarily. The classic Macbook Pros are in limbo, and the Mac Mini has an infrequent update schedule. Some, not all Macs are updated predictably.
Who saw the iPod Touch refresh coming this week? That's fairly random.
The only thing the current iMac can't best on the Mac Pro is the dual CPU option and lets be honest: the software that can fully utilize that and the number of buyers that are willing and able to pay for that imply that's a tiny niche market at best.
My friend at Apple who confirmed the leaked next gen iPad bezel was legit told me I'd be "disappointed" by what Apple had planned for the Mac Pro. I'm not sure what to make of that but we won't have to wait long for WWDC.
My friend at Apple who confirmed the leaked next gen iPad bezel was legit told me I'd be "disappointed" by what Apple had planned for the Mac Pro. I'm not sure what to make of that but we won't have to wait long for WWDC.