The OP is correct; these have been reintroduced to tabletop for a while now as well and are known as the "reseen" instead of the "unseen." Plus it looks like Flyingdebris is taking major liberties with the designs to further them anyway.
This is doubly confusing as they are using the Project Phoenix moniker, which is a canon thing from the 3070s in a (IMO really dumb) way to reintroduce ALL of the unseen, including the Harmony Gold ones.
This looks like they are basically taking redesigns and redesigning them. But yeah. My point is all of these designs - in their original art, no less - are back in BattleTech and have been for a few years now.
http://www.sarna.net/wiki/Reseen
'mechs that are now I guess possible but are yet to be announced:
Griffin
Scoprion
Wolverine
Edited by Victor Morson, 25 June 2013 - 03:55 PM.