The reports of the aircraft hull being located are (all) apparently false.
On Dec 31st 2014 the chairman of Indonesia's Search and Rescue Service stated in an evening press conference, that earlier reports about the fuselage having been located have been incorrect, the search is still ongoing, so far - referring to a report by CNN hitting global headlines - there are no sonar images of the fuselage as well. Correcting other media reports the chairman stressed that none of the bodies recovered so far was wearing a life vest. All valid information concerning QZ-8501 only and only comes from one source, namely the Search and Rescue Service which is currently in charge of the entire operation, the chairman stated with reference to the current information chaos.
Crash: Indonesia Asia A320 over Java Sea on Dec 28th 2014, aircraft lost height and impacted waters