Quoting FOX as the source, The Futon Critic announces that Futurama will be replaced with Simpsons and King of the Hill reruns throughout May sweeps. FOX will have a backlog of fresh episodes of both "Futurama" and "Cedric the Entertainer Presents" for the summer. [...] "Futurama" will be pre-empted for the entire May sweeps period (April 24 - May 21) as at least six episodes of the animated comedy will be left in the can come June. [...] Repeats of "The Simpsons" and "King of the Hill" will fill the 7:00/6:00c slot.
This would mean that no more than 4 additional episodes could air this season. In the light of the last few weeks with Futurama being removed from the schedule a few days before it should air, it is questionable if we will see any of those this season at all. Let's hope for this Sunday.