Not much .... The visual search of the plane has now been abandoned and now they are concentrating more towards the underwater search in the southern Indian ocean. I doubt whether it'll ever be found.
What about the relatives able to ring the mobiles of the people on board? No answer, but some phones ring out.... Why did the plane end up close to Australia? Why did the plane climb to 35,0000 feet? The likely cause is that the plane somehow developed an electrical fire which forced the pilot to such a high altitude. Then for whatever reason the plane was put on autopilot due to the lack of air in the plane. Everyone including the crew were killed or knocked unconscious being that high up. The plane crashed 7 hours later.
There would now be experts who are estimation how long the part has been there. From this, they can work out how long it was on the water. They would then use ocean current charts, as well as recorded weather condition stretching back to the the time of the incident. They would also have to take into account the shape of the item, since it may respond different to these conditions than say, a shipping container would. The location of the crash could be a very significant distance from the location of this wing. I'm guessing they may have already worked all of this out and formulated a probable new crash area range.
According to an article on CNN, that thing lrobably broke off while on the air and spiraling down due to the lack of bent on the front panel. Oh my.
It is now officially confirmed that the part of wing recovered from reunion island is indeed from flight MH370 http://www.bbc.com/news/world-asia-33794012
Doesn't help much, all it confirms is that it hit the water somewhere in the Indian ocean. It will still probably never be found.
