I only found it on the german gamestar site, there's nothing I found in Codemasters' official press releases. Well, according to these news they plan for a release in 2008. It's designed to be a single- and multiplayer war simulation, the gameplay should feel as realistic as possible. There are different classes one can choose.
edit: Well, the title should say "Operation Flashpoint 2", sorry. If a moderator could edit that, I'd be very glad. Thanks.