Since Ricardo did a magnificant job on adding on-demand filters to classic ui, you may want to test that yourself side by side to production enviroments and enjoy new features as much as we do (and focus on the real stuff).
Installing Icinga Classic UI from GIT next is presumingly easy – just follow the wiki entry I keep writing for that reason.
That way, you can enjoy the new feature set while not touching the existing installations. And even better, decide to use that as your standalone dashboard later on once Icinga 1.10 is officially released. As usual, send bug reports to https://dev.icinga.org 🙂