A new Release build is being made right now.
After large content updates, Beta is updated first to make sure nothing major broke, and then a Release build is made a few days later as things settle down and seem to be working.
There's only one know issue with 1.2.4 right now, and that's an unused API function broke. There's a reported issue with items not getting highlighted as consistently as before, but I can't replicate it and need more logs from anyone who has the issue.
The Beta made last night fixed a few issues that were in the last Release finally, so there was an extra delay to make sure nothing else was broken from fixing them.