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

You can download it from Google Play by opting into the beta here:
https://play.google.com/apps/testing/com.valvesoftware.steamlink

Or downloading directly from Valve here:
https://media.steampowered.com/steamlink/android/latest/steamlink-android.apk

Changes in build 1.3.31.313:

• The enhanced quality presets have unlimited bandwidth

Changes in build 1.3.31.312:

• Added a 100 Mbit/s bandwidth option
  
• The "Unlimited" bandwidth option allows adaptive bitrate up to 250 MBit/s when connecting to Steam beta dated June 10th or newer
  
• Fixed rare controller related crashes and hangs