no, as usually they trimmed the extras considerably down. there are only 4 audio commentaries (out of the US edition's 22), and a couple of documentaries on smoking advertisement in the 60's. I can't understand why they don't include every commentary on these discs. is it a question of price? is it copyrighting issues? but if it is, why are 4 of them available and not the others?
As I posted elswhere, the UK All-Region Blu-Rays have all the commentaries for Season 1 and 2. I don't know about Season 3 and 4 but I would say it's a safe best to think they would also have all the commentaries but I'd like to know for sure.