{
  "archversion": "2015.11.01",
  "isochecksum": "de1876320317586ec84259df3bc3cfbafcf3242c",
  "isochecksumtype": "sha1",
  "pathtoiso": "http://archlinux.mirror.dkm.cz/pub/archlinux/iso"
}

{
  "archversion": "2015.12.01",
  "isochecksum": "7de3315b1384e5d2769eca13453e87a8d303050e",
  "isochecksumtype": "sha1",
  "pathtoiso": "http://archlinux.mirror.dkm.cz/pub/archlinux/iso"
}

Upgrade installation media to 2015.12.01
Upgrade installation media to 2015.12.01
