When can we have more than 12 characters?

Right off the bat since I was enjoying the game I purchased enough character slot tickets to have all 15 classes. There’s no documentation anywhere I could see that told me I was hard capped at 12 character slots.

So here I am with 12 lvl 50s and there’s already chatter about new classes being released and I can’t even use the 3 more character slot tickets I already have. /Frustrated.

Any word on when we can open up more character slots?