This release is beta quality, with the next several point resleases expected to be bug fixes leading to a stable version.
In terms of new features supported in Tomcat 7, Thomas noted that Tomcat now implements Servlet 3.0, JavaServer Pages 2.2 and Expression Language 2.2 from the JavaEE 6 specifications. He added, however, that the specifications supported in Tomcat 7 represent only a subset of the full set of the JavaEE 6 specifications.
“Tomcat has always implemented this specific sub-set of the JavaEE specifications,” Thomas said. “Another Apache project, Apache Geronimo, implements the full JavaEE specification and uses Tomcat as part of their solution.”