Considering people are constantly going an about 'when is it going to be released, why isn't it released yet, etc.', you can see why it can get frustrating when it seems no one listens.
They should be concentrating on the pack and making sure it all works (which they do a good job on) and not have to worry about a community who are, for lack of a better description, just essentially whining. Plus, the FTB team don't know when it will be released either. One of the main things they are waiting for at the moment is Redpower, the best they can say for that is, it will be done when it is done and it will be done when Eloramm fixes the last few known bugs and even then, you don't know how long that will take.
So, cut them some slack and let them get on with it. It's not like they are harming you in any way by not giving out info they don't know themselves.