Thus far no meaningful information has been provided, and it's all still speculation at best. The leaking of CVR information, especially in a context not understood by the poorly trained foreign representatives giving the press conference, then expanded upon in ignorance by those reporting the event, lends very little to the meager facts presently in evidence.
Reports of calls to the tower describing the load shift, CVR commentary, debris left on the runway, webbing strap conditions after the conflagration, and other details are scanty, unreliable, and largely conjecture at the present time.