https://steamdb.info/app/282440/history/ shows new development activity, back in July, on the "beta" and "devel" branches for QL. The last time these branches were meaningfully touched was in 2016. Not trying to get anyone's hopes up, but it is weird considering the 2016 update was supposed to be the last.

Credit to IxLOPEZxI for spotting the change.

The QL dedicated server also shows new beta and devel branches created on the same day.