Well, As I know that My friends who work at IBM and told me that GPUL do included AltiVec compatable and support 32bits environment. They already tested GPUL and Power4 on prototype PowerMac. They planned to released GPUL with new PowerMac not Power4. Because of the cost issues. Anyway, within few months new xServe will release with GPUL or Power4. Mmmmm
One problem that Apple is not sure about this because of costs about GPUL. I'ts not cheap. My thinking that Apple will offer two options to use processors of Motorola and IBM. That allow customers to decide which to pick PowerMac for their budget need.
In the past that when the first PowerPC released. Many people complained to Apple. Because all products is way expensive compared to PC. That why they need to be more careful how do Apple offer the right price and comfortable for customer to purchase right machine.
Don't forget many people really didn't understand what PowerPC Brand. means and MHZ too. They thought that PowerPC is a brand name of processor. Also they look at big numbers such as MHZ. For example at CompUSA. A guy looking at Gateway that have offered 2.x ghz. I told him come and look up at Apple and showed him new Dual 1.25 GHZ. He said "Nah it's slow and it have 1.25ghz!" I said "no it's Dual" He said oh but I prefer Gateway since it have one processor of 2.x ghz which is faster than one processor and cheaper. However many people don't understand what Apple have. I kept telling people that Apple is alike Porsche. While PC is alike VW Bettle. Because of costs. Anyway, I think Apple should change the number tell them it's 2.50ghz and forget say Dual 1.25 ghz. it confused people and they are not
We do know it while others dont. That one problem.
Mac Pro 8-Core 3 Ghz, 4GB and 1 TB (Video Editing)
Mac Pro Quad 2.5 Ghz, 4GB and 1 TB (Graphic)
iMac 24" Core 2 Duo 2.33 ghz 2 GB and 500GB (Work)
MacBook Pro 15" LED 2.4ghz 2 GB