Over the next several months I see my current campaign winding down (up?) into a series of big, more self-contained adventures, eventually leading to the 'big finish' and denouement. Before them, the plan is to start one or more alternate campaigns; we might try porting my homebrew of CITY to Warhammer 2e, or give in to the power allure of a SWSE campaign... so we can do to Star Wars what we've been doing to fantasy for the past 3 years, which is best described as 'still illegal in the state of Texas'.
By the time 4E comes out I imagine we'll be eager to start a campaign using it. I'll probably try grafting CITY onto 4E, unless that particularly creative wellspring has run dry. I'm guessing it won't, though. CITY's proving to be the perfect vehicle for embracing and subverting both the D&D rules assumptions and the conventions of fantasy fiction.