OK, lots of confusion evidently here.
Blu-ray is not done for CES announcements yet, first of all. Disney will be announcing. Warner may announce.
Even if Warner do not announce at CES, their titles are on display at the Blu-ray booth. That's where The last Samurai, The Matrix etc. is coming from. See this pic, there are a number of Warner movies, and Disney movies there too:
http://www.watch.impress.co.jp/av/docs/20060105/ces04_19.jpg
HD-DVD according to the official press release are expecting 150 titles by the holiday season, 50 by May. I think the 200 figure came from someone just adding them up, but 150 seems to be the total by around the end of the year.
The exclusive studio support is:
Universal for HD-DVD
Sony Pictures, 20th Century Fox, Lionsgate and Disney for Blu-ray
Warner and Paramount are supporting both.
edit - that linked to list is not comprehensive at all. The first two movies I looked up aren't there (flightplan and hero - terminator 3 isn't there either, nor crouching tiger). My CES thread has as many movies as I could find in the first post for both formats, although I have not included any warner or disney in the Blu-ray section yet.