http://www.bbc.com/news/world-28354787
Seems to be the most updated and recent info on the crash
Ukraine blames Russia, pro-Russia blames Ukraine, no one has confirmed that it was shot down, 23 US citizens on board, Obama says 'his first priority will be to determine if US citizens were on board' (even though "Reuters tweets: #BREAKING: Number of dead from crash of #MH17 more than 300, includes 23 U.S. citizen: Interior Ministry adviser, quoted by Interfax")
Recent interesting post:
"19:00: A tweet (in Russian) from a key Twitter account used by pro-Russian separatists, in which they claim to have captured a Buk surface-to-air missile system, has now been deleted, BBC Monitoring observes. Ukrainians say the Malaysian plane could have been downed with a Buk, but pro-Russian rebels have now denied they have it."
And now most airlines are diverting flights around that area. The FAA had told US airlines to avoid it since April btw.