New Power Macintosh G5 configuration might be as follow, as thinksecret.com reports:

Dual-2GHz
512K L2 cache per processor
Dual 1GHz frontside buses
512MB PC3200 DDR SDRAM (4GB max.)
160GB Serial ATA Hard Drive
128MB DDR SDRAM ATI Radeon 9600 video card


Dual-2.3GHz
512K L2 cache per processor
Dual 1.15GHz frontside buses
512MB PC3200 DDR SDRAM (8GB max.)
250GB Serial ATA Hard Drive
128MB DDR SDRAM ATI Radeon 9600 video card


Dual-2.7GHz
512K L2 cache per processor
Dual 1.35GHz frontside buses
512MB PC3200 DDR SDRAM (8GB max.)
250GB Serial ATA Hard Drive
256MB DDR SDRAM ATI Radeon 9650 video card

I think a better DVD-RW could be added and middle model could be liquid too.

Original rummor:
http://thinksecret.com/news/0504macs.html