PowerMac Specs:

1.6GHz, 1.8GHz, or Dual 2GHz PowerPC G5 Processors
Up to 1 GHz processor bus
Up to 8GB of DDR SDRAM
Fast Serial ATA hard drives
AGP 8x Pro3 PCI or PCI-X expansion slots
One FW800, two FW400 ports
Bluetooth & Airport Extreme ready
Optical and analog audio in and out

leaked from apple.com!

ttp://www.spymac.com/forums/showthread.php?s=&threadid=29369