The latest version is read from the manifest.json file we have on our server, and you can be sure it's 2.9.0 (well, today it's 2.9.1).
But like any other file, even that one can be affected by:
- your firewall or antivirus blocking the connection
- your local cloudflare node not updated. In this case, I suggest waiting for 2.9.1 to be deployed, perhaps this will fix your stubborn local cloudflare node in getting the correct version.