JT, from what I read the R2 discs have no extras at all. While the R1 discs will have commentary on 8 episodes, promos and such. The R2 season 2 disc does has the lost/banned episode "Once Upon A Wienstien" though. Which is not on the Season 1 & 2 R1 set. From what I've been told, "Once Upon A Wienstien" is being saved for the Season 3 DVD here in the US.
MTFBWY and HH!!
Jar Jar Binks