Management has been reviewing all of the sites that are currently in Beta to determine which sites are ready to lose that label and join other graduated sites on the Stack Exchange Network. Based on the longevity of our site, the number of open questions, and the number of open questions that have at least one upvoted answer, Open Source is ready to leave Beta. This will happen on 16 December 2021.
What this will mean is that the Beta label will be removed from our site. At some point in 2022 (or even 2023), we will also have a graduation election; all existing moderators will be retired, and elections will be held de novo (though there is no bar on your current moderation team standing, should we so choose).
The usual site re-skinning will not accompany our graduation. At some point down the road it is hoped that we'll get a light re-design to move us a little away from the beta skin, but it won't happen on the 16th.
Apparently, we can refuse this crown, if we so desire. If you'd like to argue for us remaining in beta, I'd ask you to open a new meta question.