If you're looking for an investigation that assigns blame, you are going to be disappointed by the conflicting press releases.
If it's a pilot or procedural error not much will be said in the public press.
If it's an aircraft system error then a hint might come from the order book.
Since the aircraft is not yet in service press topics serve no purpose
in summary, much will be done behind the scenes to ascertain the cause, but little satisfying press releases.