Yesterday I updated JOSM and today I updated it again. It still says “You should update!” and “Active version ‘4272’ should be updated! The current stable snapshot is 4279 and 4279 is the unstable development version”.
I checked Help/About and I am indeed running the latest version 4279. Questions:
Why does JOSM think 4272 would be the “active” version?
As far as I know a stable version is always “tagged” by one of the developers (“by hand”)
whereas the unstable/latest versions are “tagged” by the nightly build script (“automatically”).
If there’s no commit(s) of new code since the nightly you’ll get a stable and a unstable on the same day.