apt-cache policy steamos

desktop@steamos:~$ apt-cache policy steamos-updatelevel
steamos-updatelevel:
  Installed: 144
  Candidate: 144
  Version table:
 *** 144 0
        900 http://repo.steampowered.com/steamos/ alchemist_beta/main amd64 Packages
        100 /var/lib/dpkg/status
     135 0
        900 http://repo.steampowered.com/steamos/ alchemist/main amd64 Packages