If by notification you mean that you can check manually, and it’ll show the version, then yes. But not in the sense of “it’ll pop up a notice”, I don’t think.
This comes up with some regularity on the forums. Mostly because people have a hankering for new versions, which is particularly strong with Plex users, for whatever reason that may be. Hence the idea to install into a jail that auto-updates.
1.19.4.2935 is also the latest version that is available. 1.19.5.x is a beta release, which you’d only receive if you installed the beta channel plugin. To the point of a particularly strong hankering for version upgrades with Plex users. You are on the latest, yet, we are having this discussion about why Plex isn’t updating to beta versions for the stable channel plugin.