Just to let people know. I heard an interview with Matt Groening during all of the Simpson's movie hype. He awas asked about Futurama and the movies. He said there was originally going to be 1 movie. Fox wanted 1 movie for DVD, but Matt said there's so much why not make it 2 DVDs, then Fox said why stop there? Let's make it 3 DVDs or 4 DVDs...
So 3 or 4 movie DVDs were made. It is similar to how the return of Family Guy came about. They made the Live of Stewie Griffen, and Fox picked up the show again. Well Fox tried to pick up the series again, then two other stations including Comedy Central wanted to pick it up too.
Comedy Central won! So now the 3 or 4 DVDs are split up into 13 episodes. Because there are 90 minute stories, they are edited, padded, and spliced together to make the episodes only 30 minutes. This is what is taking so long said Groening.
The Futurama episodes will air on Comedy Central in 2008. That is just what he said in a little interview. I'm sure the Internet will have something more in depth on it.