They have moved the forums from Delphi to their own site. This is Yet Another Disruption for the community that had formed at Delphi, after the sudden cascade of cuts in game features and the firing of a bunch of people including Alan Emrich.
Also, the new forum is cruddy. It seems to be a UBB type board like this one, but not well designed. AWFUL color scheme, bad screen layout. Yech... there was more whining about the BB than about anything else for the first week after the move.
Unless this game turns out to be the greatest 4X ever (erm, 5X?
) I think this whole affair is going to leave a 'sour taste' in the gaming communities. QSI is probably not gonna remember it fondly either.