It isn’t exactly the good news that Windows Phone users have been waiting for, but it is some sort of good news. The official BBM for Windows Phone app is now available in Private beta in the Store. This means that only people on the tester list can download it, so you can’t get it yet except you are on that list.
No; I am not on the list either, but I know a few people who are. No; I cannot say anything about the app. They have not told me or showed me anything either.
Hopefully, this means that we are closer to a proper availability soon. July was the fixed month anyway. We are here already in July. Keep your fingers crossed.