You would need to make a forum account over there (use the same email address as your KS account), and send a PM to "Doctor Tyche" with your username from Kickstarter. He'll connect the two, and you'll get the puffy little K under your avatar and name.
So far, other than tiers that grant Forum Titles, that's the only perk you'd get for now. Development is pending on the title, still on target for a Costume Creator demo to be released this Fall.
