It's never coming out of beta. Glitch is actually the alpha for a super secret project known only as "Gdyby kózka nie skakala, to by nózki nie zlamala".
I think to celebrate or beta status and hopefully ongoing beta status we should have a chance to buy skeletons to put in our attics. Please stay in beta no need to launch and stablize let Stoot and the dev's imagination room free!!
Beta is the stage of development and testing the game is at. Games generally go through alpha testing and beta testing which are only open to a limited group of people, and then are opened to the public.
Glitch was in beta once before, and was launched last September (opened to the masses). Then the devs felt like it needed more robust development before releasing it to the madhouses of the public, and they unlaunched it two months later, going back into the beta stage of testing.
Glitch has only had the new beta tag for about 10 months, not over a year. I don't recall any beta tag before the unlaunching.
Even after re-launch, the game will always be changing, hopefully, or else it will get stale and people will stop playing.