Using the web app, it used to be that when a new server version was available, you could click on crossed wrench/screwdriver icon on the top right, then click on SETTINGS General in the left column, and you see what version of PMS you are currently running, and a notice that a new version was av…

Web app new PMS version What's New missing

darcilicious March 19, 2020, 8:42pm 2

Missing on my Settings page as well…

In the meantime, here are the release announcements, starting with the next version after the one you currently have installed:

Topic		Replies	Views
Plex Update Banner - Ad A Whats New Option Feature Suggestions	3	309	June 10, 2021
Release Notes for PMS 1.18.4.2171...? General Discussions	11	3431	April 22, 2020
Add "What's New" to the web client update banner Feature Suggestions	2	77	June 10, 2021
Version Release notes Desktops & Laptops server-linux , server-qnap	2	506	March 4, 2020
Web interface said PMS was already up to date but a newer version existed Plex Media Server server-windows	5	98	September 15, 2021