That’s what the changelogs are for, to know what’s new.
Maybe? Don’t expect much, Arc has mentioned before how difficult it is to justify the dungeon’s place in the game.
This ain’t a slave trainer where you have to break down characters, you just hit them with magic.
So if there’s any content, don’t expect that much and definitely not for every character.
Fairly certain we had that ability already, Qarinah let us wander into the dreams and we could go into Pixie’s (not naughty).
That feature might be expanded later in act 3 or after the game it’s done and Arc can afford to add filler in earlier acts.
No.
Rigging tentacles is far from easy, and again. Arc could spend that energy into something the rest of the audience would appreciate more.