It has been a long time coming, but it is finally here. There will be some forums on Brandon's unpublished novels, where they can at last be discussed. In particular, we now have forums on the prose version of White Sand and Aether of Night. Additionally, we now have a forum that is just called White Sand, which will be the canonical graphic novel discussion board.
Thus far we at 17th Shard have needed to censor people posting info from unpublished works. This was for a number of reasons. First, these books are not canonical and so basing big theoretical discussion on them was unwise and misleading. More importantly, not everyone had access to these manuscripts, and we didn't want people spoiled about the contents of these books. But now the solution is here.