I'm kinda surprised so many Stanley Clements films made it onto Vol 3 myself. I haven't seen any of these so I'll be looking forward to seeing how they stack up.
Though I do find it strange that both of the swan song Bernard and Leo Gorcey movies are included but the very first Clements films isn't. It would have made the series transition in Vol 3 more interesting but since the second Clements film is included it's not a big deal. Maybe that one needed more work?
Very interesting that the product description of Vol 3 flat out guarantees Vol 4 is coming. I think March 2014 is a good guess considering the gap between 2 and 3 was almost exactly 5 months. Hopefully it comes out sooner but I wouldn't be surprised if it ran into delays as well.