We got the gladsome tidings three months ago but we're still in beta. When is Music SE graduating? Is there something we need to do to make it happen?
I left a (playful) comment, but I realized this merits an answer. What Dr. Mayhem said is exactly right.
This site is already lined up for graduation. However, our design team is facing some serious backlog and I expect we're still looking at a matter of months before they drop by and solicit feedback on mockups.
Don't worry. Even if it continues to take awhile, you're still graduating.