From the ABC news website:
"The Australian Transport Safety Bureau continues to refine the area where the aircraft entered the water based on continuing ground-breaking and multi-disciplinary technical analysis of satellite communication and aircraft performance, passed from the international air crash investigative team comprising analysts from Malaysia, the United States, the UK, China and Australia."
This gives me hope that the data and all the assumptions that have flowed from there are being scrutinised and analysed by a team of many experts, rather than the wild speculation that went on during the early days of the investigation. (Which apparently is still going on. It must have been the mangosteens, dammit!!!)