The Vampire Diaries Season 4 will premiere in October. That's really all we know for absolute certain.

Bur Julie Plec has dropped a few teases here and there regarding Elena's transformation; how it will affect her choice of Stefan; and where it will leave Klaus, now his doppelganger is no longer human.

A network press release has also teased a new villain.

At least week's CW Upfront, meanwhile, cast members Candice Accola, Steven R. McQueen and Paul Wesley touched on various topics related to their characters and what's ahead. Will Caroline help her pal transition? Will Jeremy and Matt, the only humans remaining in town practically, team up? Watch below for their answers:

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