According to sources, FOX will hire new voices for the renewal of the Futurama series
after they couldn't reach a contract deal with the current actors.
If true, this is a bad move - voice actors are the life blood of a cartoon. Even the animation can be bad (examples are far too numerous, but not this show) and the right voice work can make a show a success. I guess it wasn't enough for FOX to kill the show once, now they want to turn it into a zombie as well.
UPDATE: Crisis resolved, original actors are returning!