It's basically guaranteed now.
Empire
Sith Warrior
Bounty Hunter
Imperial Intelligence Operative (aka "Operative" is my guess)
Unannounced
Republic
Jedi Knight
Smuggler
Trooper
Unannounced
This was my first thought aswell.
The majority of the people on the TOR forums always did think they'd introduce some sort of sneaky stealth class, perhaps this will be their answer.
Also now we don't know who the mandalore is? Seems really strange that they introduce him and then get rid of him two videos afterwards.
Also I'm a little confused about the order of the timeline, I thought the holonet was doing the dates backwards?