The next version of Steam Link for Linux is now available as a beta build.

You can install the beta using the following steps:

• flatpak remote-add --user flathub-beta https://flathub.org/beta-repo/flathub-beta.flatpakrepo
  
• flatpak update --appstream
  
• flatpak install --user flathub-beta com.valvesoftware.SteamLink

Once you have the beta installed, you can run it with:
You can be explicit about whether you're running the beta or stable version by specifying --branch=beta or --branch=stable

You can get future beta updates with:

Changes in build 1.3.15.284:

• Fixed Bluetooth Steam Controller detection

Changes in build 1.3.14.283:

• Improved settings recommendations based on network test results
  
• Improved user flow for pairing with Steam via PIN code