I think that it makes sense to offload some of this work to the plugin writers and automate the rest.
For example, when publishing a plugin, its author will fill in a short template with the plugin name, version number, release date of the version, etc. and will update it in
It can be either in the first post of the corresponding thread, or externally, and can be scrapped on a schedule.
I am basing this suggestion on Notepad++. It has a built-in plugin manager that shows which plugins are available, installed, updated, and incompatible: