What sort of investigation can we expect? there are always lessons to be learnt from sad incidents like this I hope we do find out what happened so it can be prevented in future
If it's mechancial related expect EASA, the NTSB, the FAA and Boeing to issue coments in less than 6 months.
If it's mostly crew or dispatch related and no new lessons learned, then don't expect to see anything other than internet chatter.
I suppose that there can be other issues, but for this specfic accident I can't think of any?