I don't think Ron's review was ever on the Regional Dvd section, as far as I know, it's still very active over at the Theater Software area, he even did a review on Matrix Unload..
Nope, Ron has stopped reviewing for several personal reasons. They are currently looking for a possible replacement per the sticky thread at the top of each forum.
I assume his "Sneak Peeks," such as for the recent Matrix Reloaded will continue as they're only occasional events.