For all of you holding off for the 65nm:
The chips, which are a sizable difference than the current 90nm chips, are being planned for a new motherboard codenamed Falcon (if you recall, Microsoft's previous motherboard upgrade that included an HDMI port was called Zephyr). The upgrade will still have 90nm graphics chips from ATI -- that upgrade is for later. And there is no guarantee that the smaller chips, though theoretically will require less energy, will alleviate the Xbox 360's Red Ring of Death.
http://www.joystiq.com/20...m-cpus-soaring-this-year/