I can understand their reticence to post on a public forum. Given how much has already been misquoted or taken out of context, it's just not good drills to do it.
I would think (and hope) that Jolla would have something in store for when the SDK is released, be it a forum or some other channel for communication to ensure tight comms with the developer community who will work on application development.
I would also think that we will get all the info we need, as we need it and on their terms. That's common sense and good business practice. As a small enterprise with everything to lose, they are playing their cards very close to their chest.
On a brighter note, I'm very happy to see that they're working with Creoir as these guys have some of Nokia's greatest hardware, design and mechanical talent on board. Think, some of Nokia's most iconic design concepts and the team at Creoir were probably behind it....... in another life