Tomcat 5.0.27 was released on June 17th, 2004. At that time, the TOMCAT_5_0
branch was tagged in CVS, and work on Tomcat 5.5 began. We have now had several
Tomcat 5.5 releases, including a couple of stable ones. Accordingly, Tomcat 5.5
is now the focus on work. Tomcat 5.0 is in maintenance mode and its releases
will become less and less frequent.
Tomcat 5.5 has several major goals. They are discussed in the tomcat-dev
mailing list's "5.next" thread:
The status of some of these items is detailed below. Once 5.5 releases are
available, please refer to the Changelog accompanying each release for detailed
changes, enhancements, and fixes.
Tomcat 4.1.x is no longer actively developed. It is maintained to address
only showstopper, security, and Servlet Specification compliance issues. Maintenance
for Tomcat 4.1.x will likely cease once a stable release or two of Tomcat 5.5 are out.
Users of Tomcat 4.1.x are strongly encouraged to upgrade to the latest stable Tomcat
Tomcat 4.0.x is relatively old, and not actively maintained or supported.
It is strongly recommended that users of these releases upgrade to the latest
stable Tomcat 5.0 release or at least the latest stable Tomcat 4.1 release.
Tomcat 3.3.x is in roughly the same maintenance mode as Tomcat 4.1.x.
Tomcat 3.2 and earlier are in roughly the same support state as Tomcat 4.0.x.
Users should upgrade to Tomcat 3.3.x or the latest stable Tomcat 5.0.x.