The Mac Pro is well over due a complete overhaul.
Media & VFX houses demand computational power and Apple has been losing market share for a while now. Yes they have a nice unix based OS vs but Microsoft has come a long way with Windows Server 2012 and software companies really driving their software to do more on PC!
It's good to see some rumours and developments on the Mac Pro front.
The Mac Pro is off the market in the EU at the moment and from the articles below it's going to be a while before we see a new one as Apple wait on Intel's new chips (a good call in my opinion).
I would love to see Apple experiment with some own brand Thunderbolt graphics solutions.
Nvidia with CUDA, SLI and some Thunderbolt arrays would be an interesting mix. Same goes for AMD and crossfire... You could turn a little Mac mini a rather dent little gaming machine and revive an ageing MacBook Pro.