The good folks at Pandemic have a two threads up on the official Mercenaries 2 forums that those seeking more information about the game may wish to check out. The first is a thread where fans can post questions for the dev team and get some feedback on what's going on with Mercenaries 2. Needless to say, that's become a very long thread. The second is simply a frequently updated thread that takes all the questions and answers from the aforementioned thread and posts them in one place so you don't have to fish through 65+ pages of comments to get a bit of info on the game.
Based on information from the site, Pandemic is still shopping around for a distributor for the game and has still not made a final determination on what systems Mercs 2 will be appearing on. Here's to hoping it goes multi-platform so no one has to miss out on the kaboomy goodness. After all, like the game says... "Everybody Pays"
Check out the Mercenaries 2 website here, the "Ask a question" thread here, and the question summary thread here.