"Yes it's fun telling ourselves that our purchase was a good one. But we are all going to have egg on our face if it turns out the 2008 pro doesn't support the 5870!"
Oh I don't know...at least we KNOW that our '08's WILL support the nVidia Cuda cards (FX, etc)....not so sure about the new models though...looks like the ONLY offerings will be the ATI platforms out of the gate, which...if you've upgraded to the new CS5 production package from Adobe, you're not going to be able to take advantage of some incredible peformance advantages by offloading work to the GPU...
Hopefully Apple will do the same with their pro software development, and the use of GrandCentral with Snow Leopard. However, that's the future...our '08s can handle the nVidia cards today. I do a lot of video and photography work and have been gradually learning Premier and After Effects after many years of only using the FCP suite.
I do love my '08, but I guess I'm not as "put off" by the pricing of the technology in the new MP...in fact, reading some of the (most of the) comments about the new system drives me NUTS!!!! I run a business and we have several Macs that are only for business use. These new machines are incredible!!! If you price the same rigs with Dell (Precision), HP, Alienware, Falcon NW, etc....the pricing is similar, if not more on the Windows side! Who cares about i7 machines? These are server grade Xeon procs and mother boards....as all of us with 08 Pros can attest to, these rigs do NOT have that invevitable Windows machine slow down over the years...Mine is as rock solid and fast as the day I bought it...and in many cases, faster...as I've added 16gigs of RAM as the price has dropped. My 8800gt is still a pretty decent card for most applications...but I do lust after the new Cuda enabled GPUs, so I am ready for an upgrade there....but, honestly, after 20 years of using PCs, and assuming they'd be ready for the trash bin after 3 years of use...I'm ecstatic with the performance of my almost 3 year old Mac Pro.
And...as a business owner and video production company, I wouldn't hesitate to write another $5k check for the new machine...if the work necessitates the purchase.
On the flip side, if I was primarily interested in gaming...I would definitely consider an i7 Windows rig for the flexibility of GPUs and the "Cheap" factor.
This is my first post on the new machine...yesterday, after seeing the announcement on both the iMacs and pros, I was really...really excited. Then, after making my way through a couple of pages of idiotic complaints about "No BluRay" "No USB 3.0" (Card is FREE with the new WD drives

), "No LightPeak (sp?)", "Too Expensive" (Are you KIDDING ME????)...I had to shut down MacRumors for the day. Absolutely ridiculous. It seems like MR has turned in to a Bill Gates fan site.
There's always a premium for Mac gear...it's always been there. I happily pay for the ability to run a better OS....with better reliability, less maintenance, more efficiency, and incredible ROI (Return On Investment)...
Again...as all of us "Cool Kid '08 MP owners" can attest to...the MacPro is an awesome investment...usable for MANY years to come (I have yet to bring mine to it's knees...) Once you spend the cash, you'll quickly forget about it...as you're the owner of one of the GREATEST pieces of hardware available today at that price.
...and to the complainers about the "Design Change"....Ridiculous! Hands down, again...after decades of using the PC platform and their inability to build a clean case (internally), with decent upgradability...the MP is a God-Send. The HDD trays, easy accessibility to RAM, cards and drives is AWESOME! I know some boutique manufacturers of PCs do the same...but again, you WILL pay!!!!
J