Out of universe-wise, there's the whole thing with Nocturne from the Exiles who is the kid from her universe's Kurt and Wanda, and the Wolverine and...
So Iceman is indeed back after all this time being missing... as a throwaway cameo in one panel with no acknowledgement of whatever was happening to...
I think the reason there wasn't a thread for months this year was because we (or at least me lol) were waiting for him to officially come back or at...