http://www.fantasyflightgames.com/edge_news.asp?eidn=2268
I believe this is the first new book announced since Deathwatch's initial release. I'm always prefer my planetary info with a more concrete adventure to go with it, but I'm sure I'll browse this at the store and see if it has enough to hold my interest. So not an automatic buy like Mark of the Xenos, but it is nice to see continued support announced. If it has enough adversary stats I might pick it up.
Any wild speculation as to what this book will be like? Is this what people want for Deathwatch? What other sorts of books are you looking forward to?
Of course, I expect they'll release another round of pdf catalogs in time for GenCon.