I was beginning to have doubts about weather he would survive or not but seeing Omega in issue 33 raised my hopes. But now the focus on the Combiners has seemingly taken the focus of repairing him. Which makes me doubt again weather Omega Supreme will ever be up and running again.
My guess (and this is only a shot in the dark here) he will make a return when they make a Titan class Omega Supreme toy so they can have an event to coincide with it.
I think they will eventually. Right now they can't. Having a non-combiner who, in AHM, effortlessly beat Devastator, the combiner who recently took on both Superion and Defensor at the same time, wouldn't work for advertising combiners.
Of course he'll return at some point, but he's probably harder to fix than the combiners, and may take awhile. Starscream may put his repair on the backburner, what with the combiners he already has too.
Considering how much resources he takes, and how they really don't need him for defense so much at the moment, they could reasonably take their sweet time, a decade or more, and be fine. Immortals and all that.
Well YOTS omega supreme was not that long ago, and it was actually pretty good. I don't see hasbro releasing another one soon, but who knows