I can't say I have much faith in the official content anymore. PS3 lemmings was fun, but not overly challenging and very short; Lemmings Touch's over-use of things such as the movable walls and adjustable trampolines got annoying to the point where I couldnt' be bothered continuing - the only official game that put me off quicker than Touch did, was Lemmings 3. And in general, I would say console isn't really the right place for a game like Lemmings, but I doubt we'll see Sony release anything on PC.
Who knows; maybe they'll prove me wrong, and I'd love to see that - chances are if a new official game comes out on a platform I have (at the moment, that's PC, Android, PS3 or PS Vita), I'll get it and give it a shot; but at this point I wouldn't be having my hopes too high.