question about gunner class.

[Viridiana]

i know we prolly wont know much info about it but am still going to ask them anyway, hopefully i can get atleast some answer:
1. how do you unlock this class? i heard rumor that u have to be level 30 and finish all the main quest to unlock this class
2. is this class like a bard? support and dps?

1) You have to have finished the MSQ all the way through 2.55, yes. How much further past that, we don't know, but probably not much more than a "breadcrumb" quest leading into Ishgard.
2) They have said that it will have support aspects, yes.