Summary of what we know.

New vilian is Kalypso Twins who is leading bandits and recruting them.

Kalypso female is siren, second time siren vilian since Steele in BL1.

Kalypso male got similiar powers to siren.

We are going outside Pandora, visiting new places. Confirmed is swamp planet, city planet and Pandora herself.

Tiny Tina is becoming Vault Hunter.

Returning of several characters list. Tannis, Marcus, Moxxi, Lilith, Mordecai, Brick, Ellie, Sir Hammerlock, Aurelia, Tiny Tina, Maya, Rhys, Zer0.

We still don't know what about. Athena, Fiona, Gaige, Axton, Torgue.

Guns with legs! Seriously! Guns with legs!

Tons of new weapons like hand cannons, mini guns, return of revolvers from BL1, lasers, cannons, shoulder armed weapons.

Possible ice element return, since on trailer there is an moment where probably Nomad is shooting the ice weapon.

Possible Atlas manufacturer return.

Sliding and shooting? WE GOT THAT BOO!

New vehicles like hoovers, monocycles and many more!

Female bandits will appear! Is confirmed atm that female Psychos exist!

New siren looks like meele puncher.

Operative seems to be like Enforcer like Willhelm was in Pre-Sequel.

Beast master looks fun! He can tame a SKAG! A FREAKIN FUCKIN SKAG!