No real concrete information other than what looks like a new character to play but here is the teaser trailer.
For some reason I could never get into “Slay the Spire”. I see nothing but glowing reviews of the game and it seems almost everyone really enjoys the game a lot. Top ten list stuff.
I realize not every game is for every person but I generally like deck builders. Maybe I missed something.
There is an entry now in Steam with actual screen shots.