Hopefully we won't have to wait quite so long for the first Futurama movie, and it will be set no later than 3005.
Futurama: The Next Generation - now that is something I would rather not see. For one, it would lose it's charm with Amy, Leela and Fry all settling down with kids, though Bender will still be there hopefully, Farnsworth should be dead by then, but maybe exist as a head in a jar which mechanical parts - actually that last bit would be quite cool
Anyway, a lesson should be learned from the series of The Flintstones where it went to the next generation and the kids are actuall fully grown teenagers... (
)