Somebody with a 970 (or Outlaw support) may be better able to say than I, but the data file for the latest ("beta") firmware version has the file name ot970051206.hex (1070 version would probably be called ot1070051206.hex), and I think the "051206" part is a date that would appear in the firmware version number somewhere - that may be where the "060511" comes from, with the 1320 being the specific version number.