Apache Tomcat 10.1.26 has now been released, and this version implements the specifications as part of the Jakarta EE 10 platform.
Applications that run on Tomcat 9 and earlier versions will not be able to run on Tomcat 10 without modifications. Java EE-based applications designed for Tomcat 9 and earlier versions can be placed in the $CATALINA_BASE/webapps-javaee
directory, and Tomcat will automatically convert them to Jakarta EE and copy them to the webapps directory. This conversion is carried out through the Apache Tomcat's Jakarta EE Migration Tool, which can also be downloaded separately for offline use.
Some notable changes are:
The complete details of these changes and all other changes can be found in the Tomcat 10.1 changelog.