Yep.
Glad we got that sorted out.
Ooh, this most likely refers to special event ‘visitors’, not those.
https://hearthstone.wiki.gg/wiki/Mercenaries/Campfire#Event_visitors
With that said, you know, I wouldn’t mind if they released the three aforementioned special portraits or those ‘extra’ uncollectible portraits present in the game (see this… Oh, and while digging it up, I also found this post of mine), but this hasn’t happened yet, and realistically, it doesn’t look like Mercs are gonna get their attention. At least the mode is still playable (especially the PvE side), and that’s it.