Xbox-Scene’s posted up shots of what’s thought to be a retail Xbox 360 containing a Jasper chipset.
The revision is supposed to use less power and generate less heat.
There’s a pic there of a new power supply at 150W (25W less than those used with Falcon boards), and news that the console’s internal memory’s been bumped up to 256Mb from 16Mb.
The internet’s all of a fluster about this. There’s no confirmation of its truth as yet.
There’s a ton of technical jargon through the link.