The BEA has a more detailed report on the accident combining flight data and cockpit voice recorder data. They also make some recommendations that images of the instrument panel be recorded, that the angle of attack be presented to the pilots and that steps be taken to ensure manual flight at high altitude is drilled.
Apparently the plane stalled at high altitude at the same time that airspeed indicators were invalid in turbulence. Even though controls and the engines seemed to respond to pilots, the plane did not recover from the stalled condition and crashed. Strangely, even in the presence of stall buffet and audible stall warning, the pilots reduced power and pulled the nose up, as if the plane were not stalled. I am not a pilot but the usual way to increase speed and lift is to increase power and put the nose down. That with three pilots present this happened during the minutes it took to descend is alarming. As with many disasters a number of things must go wrong to defeat all safeguards.
We may never know exactly what went wrong but I hope the recommendations do increase safety.