It looks like the U.K. R2 version is going to be a 2 disc edition, with the same extras as the new R1.
http://www.dvdtimes.co.uk/content.php?contentid=57498
So if I have problems with the new copy I get, I'll probably end up getting the R2, even though it will probably cost 2 or 3 times as much as I paid for the R1. :-(