I've seen enough people talk about it time to time on Facebook that I'm sure its merely a bit of stack up from over the years, although the point of the disc does suggest that Buster will be on an official set within due time. That said, having seen it long ago, despite the interesting history surrounding it, the cartoon isn't very exciting, and it was obvious then and now for Warners to go with Harman-Ising rather than McCrory, who had by this point failed twice to make a sound cartoon series for Vitaphone (the first was in 1929 with an attempt at animating Joe Jinks). I do hope people enjoy being able to see it and not be the one to upload it on Youtube :)
In any case, I'm very excited for the Toby and especially the Felixes. Through the silents I've seen, I've found Felix to be the most consistently good and have some of the very best silents, and it'll be a pleasure to see some uncommon ones.