I'm really curious as to why Inmarsat hasn't released the arcs for the other 5 pings. Couldn't hurt anything.
Unless there's some Sekrit Skwirrel Blowing Snow going on preventing it, we'd all be a lot better off if Malaysia would turn this over formally to the NTSB. The incompetence is staggering.
That said, the previous ping plots won't be released until it's in someone's interest to do so. It's probably not Inmarsat's call.
But some people know where those pings were, and you can bet their surveillance satellites are burning some fuel to take a close look.