In January 2021 we introduced the Upgrade Tool as a minimally viable product (MVP) for Payara Server Enterprise users to make the process of upgrading from one version of Payara Server Enterprise to the next faster and easier.  Each release since then has offered improvements to the tool. 

The January Payara Platform Enterprise Edition release (request here) includes 6 bug fixes and 1 component upgrade along with the introduction of a new CLI Upgrade Tool. You can see a more detailed overview of the fixes and improvements in the Payara Platform Enterprise Edition 5.24.0 in teRelease Notes here.