Well I went and bought the magazine today.
http://massive-magazine.com/
Looks to be a quarterly magazine on MMOs and this apparently was the premiere issue. Couldn't really find a publication date in the magazine, or any indication of when the artices were written. They had a little 3 page feature on TBC, where they talk about some stuff and that there will be 40 man instances in the expac. There is no mention of any 25 man instances, or changes from 40 to 25 and back. I wrote a post on the forums of this magazine as well to check, but it seems like to me that the information is just plain outdated. If someone wants I can scan the 3 pages of articles and post it here, but I don't know what that would show. I just find it annoying because this keeping at 40s in this article is being used against our guild. Oh well. :) Go go 20 mans.