So an interview is up, here's the link: http://wizardinglife.com/2010/11/starkid-interview-starship-coverage-a-very-potter-threequel/
And this is the part I wanted to point out:
StarKid: Now – um – one thing that could be exclusive… We aren’t sure if – uh, whether or not it’s going to happen, but um – we would like there to be a third Harry Potter show; A third Harry Potter Musical. It’s not confirmation or anything. We’ll have to see if the schedule works out. Also, we’re going to LeakyCon this summer! But yeah, I guess that’s definitely exclusive information, that we have plans for a third Potter show – only if the schedule allows. It mainly depends on if Darren could do it – but I think everyone else would like to do it and we’ve got the story. We’d want to get it out before the last movie, though – before the second part of Deathly Hallows.
Interviewer: That’s a ballsy move when you’ve got Starship in February.
StarKid: Yeah, we think we can pull off the third Harry Potter. We’d think it would be easier. We’d go back to our old space in Ann Arbor and recycle our old set. We’d only have a two-week rehearsal period. The show is pretty much — well, we know exactly what happens in it. It would be easy to — we don’t need as much time to pull it off.
Interviewer:Right – and you’ve actually sat and planned out the idea, what the theme is?
StarKid: Yeah, we pretty much know exactly what it’s about. We know what the jokes are and I think the main thing, the main concern, would be if Darren could be in it and do the music. We’re not sure about the music or if Darren has the time to do it with the Glee thing. And obviously we’d never ask Darren to leave Glee because it’s the opportunity of a lifetime – so we hope there’s time.
OMR!!!!!!! I SERIOUSLY HOPE THEY CAN DO IT. DARREN, PLEASE PLEASE PLEASE PLEASE DON'T BE BUSY. PLEASE. THIS IS WHERE YOUR FANDOM STARTED, PLEASE TELL GLEE THAT WE NEED YOU MORE PLEAAAAAAAAASE!!! O.O!!!!