No, a lot of them are seriously or critically injured, but none of them will dies soon as Aizen wants them to watch the final outcome when they all fail at stopping him from creating the King's Key. It is possible Head Captain Yamamoto is dead, since he used a supposedly "self sacrificing" Kido to hit Aizen at point blank range.
Aizen stated "I will not kill you" when he cut down the captains and vizards in the same attack. It's possible Kumomora might be dead, as he got some strong attacks from Aizen. Yamamoto used the "self sacrifice Hado" to try and kill Aizen, So he's likely dead.
yamamoto could just have lost an arm in the battle and kumomora just lost got cut down as well