Starskate-
"...On the inside"? No, a reliable source who spoke with someone in the know.
Aerodmb- The response was in answer to the question, "Are Qatar taking DEC's at present?" Qatar is still seeking, and processing F/O applications.
In answer to the next question, I have no idea which fleets. It all depends on needs of the airline, and applicant's qualifications.
Good Luck!