Lemmings Plus Omega's update is complete.
Puzzling 27, Mental 18 and Mental 28 required layout changes.
Playtime rank has been removed entirely, as have the three talismans that came from it:
Save one lemming on Playtime 15 "Remember Your Beginnings..." without using any diggers
Complete Platyime 5 "Acid Leak" without assigning skills to more than one lemming
Save 100% on Playtime 7 "Glider Frenzy"
Holiday Lemmings Plus's update is also complete. This one had two broken regular replays and two broken talisman replays, but no changes were needed at all to the content.
I doubt Lemmings Plus IV will need much in the way of changes either (just replay repairs), but at least one talisman will need to be removed (the level itself can be beaten without direct drop, but the talisman challenge cannot be).