Interview with Hisashi Yuki, who as noted above, had to work on MP-5 (Megatron) in under 2 weeks, and the upcoming Star Saber... plus had to do the trailer for MP-4 (Convoy/Optimus) in just one night (which would be why it didn't come with Roller).

This one is interesting for giving us some info about the size and features of the Star Saber Masterpiece... and that he really wants to do Ginrai to go with it.