LabKey Server 16.3 now officially supports Tomcat 8.5.x, starting with the Tomcat 8.5.9 release. This Tomcat release includes a fix to an important issue that previously blocked our ability to approve use of the 8.5.x line. We expect to continue to support Tomcat 7.0.x and 8.0.x for the foreseeable future, although the Tomcat team now encourages use of 8.5.x.

More details about the Tomcat issue fix at the following links:

• http://www.mail-archive.com/search?l=dev@tomcat.apache.org&q=subject:%22Same+request+object+passed+to+two+threads%22&o=newest&f=1
• https://bz.apache.org/bugzilla/show_bug.cgi?id=60409
• http://mail-archives.apache.org/mod_mbox/tomcat-announce/201612.mbox/%3C76fe5f99-cc2c-4e48-b669-738f5dae7266%40apache.org%3E

Feel free to test and use Tomcat 8.5.x and, as always, let us know if you encounter any issues with it.

Adam