I have posted in a number of places regarding the media releases, there is one important bit (
sorry) missing and that is whether this is x86 32-bit or x86 64-bit. The G5s were advertised as the first real 64-bit desktop OS for people - and the advantage of the Apple PowerMac has always been the performance advantage the RISC processor has over x86 at CPU intensive tasks like Photoshop/Lightwave/Final Cut Pro/etc renders. If this advantage is lost then Apple becomes a two-bit hardware producer like Sun Microsystems without the "big iron". Just because they design "pretty packaging" doesn't mean it will be the reason it is chosen by consumers.
I like Apple for multimedia production (and I support G5 PowerMacs that are replacing G4 PowerMacs at the college where I work) and believe that they truly are a better system for this. I'm halfway through Apple Certified Technical Co-ordinator training, the first courses in Australia, but if this is a 32-bit x86 CPU then Apple has just gone backwards 10 years in CPU architecture and performance.