Yes, it indeed is. In consequence, bindings in addons need to be recompiled against the latest ESH stable. This is quite some nasty impact, but I don’t see any other good way to deal with it as the static declaration was definitely a bug that had to be fixed.
To resolve this, do I need to update my dev environment to the latest ESH version, then rebuild these bindings?
You either simply run your addons build through Maven or if you exported your jar from the IDE, you should pull the latest master from openhab-distro (i.e. the “launch” project in your workspace) which should do an update on the openhab.target (make sure to apply the newly resolved target platform).