Believe it or not, but I actually think the atmosphere is switching for the better around these forums, now that more info is being released. Look back over some of the posts from mid-December to mid-January, and things were actually getting really bad; they seem to have slacked off more lately, and people are being a little more civil in their disagreements, or at least learning to live with one another. This will probably keep fluctuating for quite a while, even after the June release, as after June people will actually have facts to put behind their happiness or discontent.
Anyway, I really don't worry about where the 3e fans will find their niche, because there will be no lack of places to congregate -- most of which will be the same places they are now.