The area 51 suggests that sites need to stay in beta for 90 days at least, to build up users.
At present, Graphic Design is running at 943 days in beta (at the time of posting).
When is it going to launch officially?
Graphic Design will graduate... as soon as our designer Jin can get the new skin together. It's currently in line behind two other soon-to-graduate sites.
I hadn't mentioned it because it still could be a while yet - Jin is only human! - and we didn't want to get anyone's hopes up. But, since you asked... The Community Team can see that the site is in great shape, and in mid-June we decided to graduate it. Now, all that remains is to keep up the good work while we wait for the design.