Getting started instructions unclear on CDN usage

[dave-kennedy]

For CDN, you can use unpkg. Just replace version with the current version on the link below:
...
For RxJS 6.0.0 and higher: https://unpkg.com/@reactivex/rxjs@version/dist/global/rxjs.umd.js

Seems pretty simple. But how does one find the current version? I'd suspect the GitHub releases/tags, the last of which is 7.4.0. But https://unpkg.com/@reactivex/rxjs@7.4.0/dist/global/rxjs.umd.js returns 404.

Next, I'd check the npm site. It also reports 7.4.0 is the current version.

What about the official documentation? Nothing on the front page of https://rxjs.dev shows the current version, unless it's this in the footer: "Version 7.1.1-local+sha.5de9e1b35." Too bad https://unpkg.com/@reactivex/rxjs@7.1.1/dist/global/rxjs.umd.js also returns 404.

In the left sidebar of the installation guide is a dropdown that allows you to select "v6" or "stable (v7.1.0)". But https://unpkg.com/@reactivex/rxjs@7.1.0/dist/global/rxjs.umd.js returns 404 as well.

I finally found this comment which suggests another URL altogether:

https://unpkg.com/browse/rxjs@7.0.0/dist/bundles/ includes umds.

Okay, then I should be able to use https://unpkg.com/browse/rxjs@7.4.0/dist/bundles/rxjs.umd.min.js, right?

The resource from “https://unpkg.com/browse/rxjs@7.4.0/dist/bundles/rxjs.umd.min.js” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).

Grasping at straws, let's see what's in the source code of the official documentation:

<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/6.3.3/rxjs.umd.min.js" async=""></script>

It appears the site isn't actually using the latest version. That's surprising! Should we stick with the old version then?