We've made some changes to TM code that's needed for METAL HDX development and that should also yield some efficiency improvements overall. It should not change any TM behavior, but it would be good to have some testing before the changes go live on the production site.
If you have a few minutes, please try the things you do in TM on
https://tmtest.teresco.org/ and let me know if you notice any differences in behavior. One particular place to look is at the waypoint popups, which are now generated on the fly rather than all on load.