With Lucee 4.5.2.018 (latest stable release) there are many bug fixes and
several security updates, so I would highly recommend you update from Railo
to Lucee ASAP, obviously do this in your development and staging
environments first before your production environment to ensure everything
works as expected but I don’t think you should have many issues. The
migration from Railo to Lucee is pretty easy, see instructions here:
Lucee in no way provides support for Railo, in terms of updates and fixes.
Railo is the responsibility of TRC (The Railo Company) and there has been
no activity on the Railo project since August 2014, see their GitHub repo ( https://github.com/getrailo/railo).
Lucee 5 is currently in beta (http://preview.lucee.org/download/) and a
release candidate is expected soon with a final release following that.
Lucee 5 is a significant rewrite of the core Lucee engine to make it OSGi
along with additional new features, see here Lucee 5 :: Lucee Documentation