I don't think it's going to be a comeback (music, performances), but I think there's a real possibility we will see a full group appearance on a variety show, the first time since Tiffany-Sooyoung-Seohyun left SM Entertainment.
If they can work out a deal for the appearance fees, it could mean that they can start talking about contracts for performance fees, new music distribution, etc. In other words, it may be the first step in a full comeback!!!
This could be the surprise Seohyun was talking about in her recent Noblesse magazine interview
So maybe the media was onto something...
https://www.soompi.com/article…s-sm-comments-in-response