I fully agree, excellent idea @peterwilsoncc

I tried to figure out how to do this without success sorry. Basically I couldn't figure out which file I should edit to update the version dropdown.

I could get it working by adding an option to the dropdown manually in this code block but that does not seem to be the correct approach.

Nor was I clear on whether I needed to add a remote asset paths config.

Here is a related Slack thread where the Test team wanted to use Playground for beta previews.

They ended up using this blueprint:

{
  "$schema": "https://playground.wordpress.net/blueprint-schema.json",
  "landingPage": "/wp-admin",
  "login": true,
  "preferredVersions": {
    "php": "7.4",
    "wp": "https://github-proxy.com/proxy/?repo=wordpress/wordpress"
  },
  "features": {
    "networking": true
  }
}

@peterwilsoncc sorry for waiting so long on a reply, here are a few useful links in the Playground code in case you would like to work on it.

• New WordPress version select component
• You can search the codebase to see where beta is mentioned and replace it with trunk
• This is where you would link the download to pull trunk