Well, the downside of the informations usually is, that the time to the release grows even longer, because you finally want to PLAY it.
That's why in the history of IL2, but also for other games, like GhostRecon, Rainbow6, SilentHunter, etc. UBI always put a hold on any information until a certain point, just to start a massive campaign when the release was in reach (maybe like less than 6 month away).
Considering statements that were made here and in the Zoo, I'd expect some similar strategy for BoB.
I guess one major reason for that is the treatment of the all-mighty-self-proclaimed-premium-customers, who really think they can *demand* something, because they buy the game... Thank you very much... not...