Stinky on 19 October 2010
The hardware design is easily scalable. I would imagine the update would increase to six or seven multi-threaded PPC CPU cores, perhaps with switchable in-order processing for backwards compat/deterministic scheduling. The GPU is already unified shader arch and could scale easily by adding more/faster shaders without significant backward compat problems. Add to that larger eDram with enough capacity for at least two full 1080p frames and you'd have a contender.
Edit: I also believe that MS will move for full digital distribution with download or USB media transfer.
