"Has rolling for stats been confirmed?"

I watched the panel and dont recall Larian confirming that rolling for stats will be in the game.
Based on what we've seen i would be surprised if flexible racial stats (whether Tashsa or Larian's homebrew version) isnt in the game.
And i think stat rolling will also be in the game.

BG3 Modder: https://www.nexusmods.com/baldursgate3/users/55895062?tab=user+files