Ok, I haven't played warband in about a year, because I figuered it would make sense to wait for bannerlord. Seems like that was a bit overhasty. You know what, I'm gonna start a new game right now!
I guess it might have been an error by the team, to announce bannerlord this early, without having anything to show for. Looks like it was predictable, that they would have to disappoint expectations for quite a while.
By now my prediction is a beta in 2016.