UPDATE (2022-10-04, 7:28pm UTC): the patch is now available, please refer to this post for details
Our monthly patch is usually released by the end of the month. Understandably, by now, you would expect that our 5.5.57 patch (September 2022) should have been released. Unfortunately, there are a few release-readiness items which prevent us from releasing on time.
Our engineers are actively working to get the release out. We'll expect to get more clarity by the end of our Monday (October 3, 2022). This blog post will be updated as soon as we have any update.
Our most sincere apologies for the inconvenience.