"We are now accepting orders for the new 800MHz Mac Pro Memory. The available options with ETAs can be found here. We were in full swing to be prepared for a Macworld Mac Pro release, so this jumped us a little. But we were ready.
The 2.0GB based OWC Qualified kits are the first that will be shipping, with those to begin going out on Friday. (Example: 4GB (2x2GB) Kit $199.99.)

You can add 16GB of our memory for about 1/2th of the cost Apple charges to go from the included 2.0GB to 8.0GB! Double the memory for half as much. Or another view, our 16GB kit costs less than 1/4th what Apple charges to go from 2.0GB to 16.0GB
As an aside - I noticed that when you add any extra memory to the configuration, it adds significant times for delivery depending on what module type. Going from 2.0GB to 4.0GB (4 x 1GB) changed ETA up to 2-3 weeks, up 8GB (4 x 2GB) is 7-10 days...
Best Regards,
Lawrence R. O'Connor
Other World Computing"

As I mentioned earlier today in the CTO options/cost listing, selecting either of the Nvidia graphics card options bumped the est. delivery to "3-5 weeks" based on a check this morning. (But I'd definitely pick the 8800 GT over the base card despite the delay.)

"Apple Introduces the new Mac Pro
The fastest Mac ever, the new Mac Pro has eight processor cores and a new system architecture that delivers up to twice the performance of its predecessor.*
It combines two of Intel's new 45 nanometer Quad-Core Xeon processors running up to 3.2 GHz, powerful new graphics and up to 4TB of internal storage, offering the ideal system for creative professionals, 3D digital content creators and scientists. The standard 8-core configuration starts at just $2,799.

* Based on estimated results comparing a preproduction 2.8 GHz 8-core Mac Pro with a 2.66 GHz Quad-Core Mac Pro running professional applications like Maya, modo and Logic Pro."

The revised Mac Pros use the new Intel HarperTown CPUs with 12MB of L2 cache per processor (each pair of cores shares 6MB), 1600MHz frontside bus, new SSE4 Instructions and faster FBDIMM memory (800MHz vs 667MHz previously). Also included is PCI Express 2.0 support ("a 16-lane dedicated graphics slot now features PCI Express 2.0 with up to twice the transfer rate of PCI Express") and new Graphics cards, starting at the low end with the ATI Radeon HD 2600 XT w/256MB GDDR3, the (value leader IMHO) NVIDIA GeForce 8800GT w/512MB GDDR3 and at the (very) high end, the NVIDIA Quadro FX 5600 w/1.5GB GDDR3 vram (and 3D stereo port).

Apple has a page with Performance comparisons (Final Cut Pro, After Effects, Logic Pro, PShop CS3, Maya, Modo, Cinebench, etc.) vs some previous systems (some tests used G5 Quad 2.5GHz as comparison system, others used previous Mac Pro 2.66GHz system). For more details on the new models, see the Specs page

The $2799 (USA) Standard Configuration is Two 2.8GHz Quad-Core Xeons, 2GB RAM, 16x SuperDrive, ATI Radeon HD 2600 XT 256MB, 320GB HD. CTO Options include up to 3.2GHz CPUs, up to 32GB RAM, up to 1TB HDs (x4), RAID card, etc. I expected to see a Blu-Ray drive option but it's not listed on that page.
Per the Apple store - here's the CTO CPU, Memory, Graphics card and Hard Drive option prices from the $2799 (USA) base/standard configuration. (Note: std config. estimated shipping time was 1-2 business days - but adding the Nvidia 8800 GT or Quadro FX5600 option bumps delivery est. to "3-5 Weeks". Faster CPUs only added a couple days, both based on checks around 11:30AM Eastern today. Despite the delays, I'd definitely choose the 8800 GT however as the best price/performance value.)

CPU Options:
• One 2.8GHz Quad-Core Intel Xeon (quad-core) [Subtract $500]
• Two 2.8GHz Quad-Core Intel Xeon (8-core) (standard)
• Two 3.0GHz Quad-Core Intel Xeon (8-core) [Add $800]
• Two 3.2GHz Quad-Core Intel Xeon (8-core) [Add $1600]
  
  RAM (800MHz DDR2 ECC FBDIMMs) (see above for much lower priced ram)
• 2GB (2 x 1GB) (standard)
• 4GB (4 x 1GB) [Add $500]
• 8GB (4 x 2GB) [Add $1500]
• 16GB (8 x 2GB) [Add $3500]
• 16GB (4 x 4GB) [Add $4300]
• 32GB (8 x 4GB) [Add $9100]
  
  Storage (options shown for Bay 1)
• 320GB 7200-rpm Serial ATA 3Gb/s (standard)
• 500GB 7200-rpm Serial ATA 3Gb/s [Add $100]
• 750GB 7200-rpm Serial ATA 3Gb/s [Add $250]
• 1TB 7200-rpm Serial ATA 3Gb/s [Add $400]
• 300GB 15,000-rpm SAS [Add $650]
  
  Graphics Cards: (either Nvidia card option adds 3-5 weeks)
• ATI Radeon HD 2600 XT 256MB (Two dual-link DVI) (standard)
• 2 x ATI Radeon HD 2600 XT 256MB [Add $150]
• NVIDIA GeForce 8800 GT 512MB (Two dual-link DVI) [Add $200]
• 3 x ATI Radeon HD 2600 XT 256MB [Add $300]
• 4 x ATI Radeon HD 2600 XT 256MB [Add $450]
• NVIDIA Quadro FX 5600 1.5GB (Stereo 3D, two dual-link DVI) [Add $2850]

Again I'd pick the 8800 GT considering price/performance, despite the delay. There are other options of course, one that I'd select is the AirPort Extreme (802.11n) card for $50.

"Introducing the new Xserve - the most powerful Apple server ever
Starting at just $2,999, the new Xserve has up to two Quad-Core 3.0 GHz Intel Xeon processors for 8-core performance, a new server architecture, faster front side buses, faster memory, up to 3TB of internal storage and two PCI Express 2.0 expansion slots for greater performance and flexibility. "With the latest Intel processors and no client access licenses, Xserve offers unbeatable server performance and value for under $3,000," said Philip Schiller, AppleÃs senior vice president of Worldwide Product Marketing."

• Mac Pro (Early 2008): Dongle may not be recognized
• Xserve (Early 2008) and Mac Pro (Early 2008): AXD, ASD and AHT may report the incorrect total VRAM
• Xserve (Early 2008) and Mac Pro (Early 2008): AXD and AHT not showing correct number of processors or cores
• Mac Pro (Early 2008): iMovie unexpectedly closes when dragging clips into project
• Mac Pro (Early 2008): IRQARB Error reported in 64-bit Microsoft Vista
• Mac Pro (Early 2008): FireWire slow or unresponsive when using 64-bit Vista
• Mac Pro (Early 2008): Error message when using Send Registration Assistant
• Mac Pro (Early 2008): NetBoot client won't restart with Mac Pro RAID Card
• Xserve (Early 2008): Use only Apple-approved 800MHz DDR2 fully buffered ECC memory
• .Mac: Manually recovering a backup if Backup 3 cannot successfully restore
• Error -48 when restoring iPhone in iTunes
• Mac Pro: How to reset the System Management Controller (SMC)
• Mac Pro & Mac mini Fast Start: The New User's Guide to the Mac
• Xserve: Server Monitor does not authenticate with server over subnet
• Mac Pro, Xserve (Late 2006) and Xserve (Early 2008): Doesn't boot over 2 GB Fibre Channel card
• Xserve: How to Locally Erase (Reformat) a Hard Disk
• Optimizing your Mac Pro for acoustical performance
• Mac Pro: Noise, pops or clicks heard when monitoring a live recording
• Mac OS X 10.5, iChat: Unable to participate in video conference
• iDisk performs slowly
• OS X Server 10.4, 10.5: Unable to bind to server via "Encrypt using SSL"

• Dofus 1.21 (free MMORPG)
• QuicKeys X 3.2.1
• VueScan 8.4.54
• District Doubles Its Computing Power with Boot Camp and iMac (Apple)
• TweakerSoft announces VectorDesigner 1.0.0 for Mac OS X
• Flip4Mac Windows Media Components for QuickTime 2.2.049
• FuzzMeasure Pro 3.0 (Audio and acoustical measurement and analysis software)
• Image Framer 2.0 beta 3
• Babysitting Mania 1.0.1 for Europe
• Sears Sued Over Privacy Breach
• (CES) Gadgets in need of Problems to Solve (Reuters)
• PSP GPS date and price for Europe
• Gadget extravaganza in Las Vegas (CES) (cnet)
• Video game classics score Emmy honors at CES (cnet)
• No Blue Skies For Blu-Ray (Forbes)
• Paramount poised to drop HD DVD format support -FT (Reuters)
• Economy, DVD sales slip drove Warner Bros. to Blu-ray (cnet)