Acquiring third sublcass? (Destiny)

by dogcow , Hiding from Bob, in the vent core., Tuesday, June 16, 2015, 16:48 (3688 days ago) @ slycrel

I wouldn't be surprised if it were immediately unlocked, or at least unlocked when you complete the story. I'm not yet convinced we will have a story mission set surrounding this, but I could see a questline from the cryptarch to unlock lost knowledge or somesuch.

Yeah, I was expecting the new subclass to just be available, but then I remembered that you didn't get access to the 2nd until after you had a character reach level 15. Couple that with the scenes of the classes acquiring the subclass & it made me wonder. I'd bet it'll unlock on completion of the story missions; I HOPE it's a quest tho'.