More info over here.
There will be single core and Celeron versions of Yonah - but Celeron M won't show up until H2'06. 945GM and 945GT will cost about the same as 955X does on the chipset level. Centrino will have a slightly newer logo (due apparently to legal counsel). Most Yonah models will feature VT, but the ultra low voltage and low voltage designs geared for ultra portables will have it disabled. Merom (Yonah's successor) will feature 64-bit extensions, but Yonah will not.
Intel Yonah processor details
Posted on Thursday, October 20 2005 @ 12:21 CEST by Thomas De Maesschalck
Intel will launch its next-generation Centrino platform in early January 2006 and here are a couple of interesting tidbits about the Yonah processor: