Don't get your hopes up too high for Troy and Abed to make an appearance on the show -- or any of the "Community" cast, for that matter. Travis Richey, the man who plays Inspector Spacetime, wrote to io9 to clarify the rumors swirling around the internet about the series:
Dan Harmon, Community, NBC and Sony have nothing to do with this web series. I pitched it to them after my first episode of Community, but never heard back from them one way or another. So I'm going to do it myself, with the help of fans. I'm launching a Kickstarter campaign in a matter of hours for an equipment budget, and the complete story can be read there.