"They just don't do so as much on the general boards and do it on test."

What does this even mean? The developers are answering player questions on the test server? I highly doubt that, and I would hope they have better things to do. Besides, if you want to keep your customers apprised of your progress and intentions, you have to actually let them know what those are by releasing information on the general boards or your website. Look at what Blizzard does, they have in-depth notes of upcoming patch changes and future plans, and there are dozens of moderators as well as devs who frequent the boards.