Actually, we really might have had this up a month ago...
So that's pretty much all you need to know: you can support Big Finish with a two-pound/five-pound purchase of the short film version of "Cleaning Up" and help finance the lengthened version that will be their first feature film, complete with lots of the talent that Doctor Who fans know and love already. Simon Guerrier has a very nice writeup of the publicity interviews/podcasts/suchlike on his blog (except this one, which was posted the day after). There's a link to the Guerrier brother's website through that Big Finish link, but if you're looking for information on the film this is more direct.