Intel dual-core 'Yonah' to ship single core too
 

Ultra-low voltage Yonahs won't appear until Q2 2006, the same timeframe as the debut of a single-core Yonah aimed at the Celeron M space and the successor to the Q1 2006-launched 1.7GHz Celeron M 390, based on Dothan. The 1.6GHz Celeron M 380 is set to ship in Q3 this year.

So is the 2.26GHz Pentium M 780, follow-up to the 2.13GHz 770 launch earlier this month to accompany 'Sonoma', the upgraded Centrino platform.

http://www.theregister.co.uk/2005/02...oadmap_jan_05/

In case someone lost the overview of it all :
http://endian.net/roadmap_timeline.asp

that clarifies it all!!!

excellent find!