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 5.1 (or 5.5, or 5.next, we haven't
decided yet) began. Until the first stable release of Tomcat 5.1, building from
CVS head may be unstable or broken: use the TOMCAT_5_0 branch tag to build
the Tomcat 5.0 releases.
Tomcat 5.1 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.
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 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 5.1 are out.
Users of Tomcat 4.1.x are strongly encouraged to upgrade to the latest stable Tomcat
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.