The Apache Tomcat team announces the immediate availability of Apache
Tomcat 9.0.0.M15.

Apache Tomcat 9 is an open source software implementation of the Java
Servlet, JavaServer Pages, Java Unified Expression Language, Java
WebSocket and JASPIC technologies.

Apache Tomcat 9.0.0.M15 is a milestone release of the 9.0.x branch and
has been made to provide users with early access to the new features in
Apache Tomcat 9.0.x so that they may provide feedback. The notable
changes compared to 9.0.0.M13 include:

- Improvements to SPNEGO authentication. Patches provided by Michael

- Correct regression in I/O buffer handling.

- Improve handling of varargs in UEL expressions. Based on a patch by

Please refer to the change log for the complete list of changes:


Migration guides from Apache Tomcat 5.x, 6.x, 7.x and 8.x:


- The Apache Tomcat team

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