Well.. it is still possible, that the prototype shown to public that started serious discussion about LCD and other stuff might affected the development. Maybe it is late for such design changes..... but check Sonic Hedgehog main character changes in upcoming movie due to public requests, which delayed movie for 1/2 year
But in reality they are probably just waiting to finish some UL/CE etc. testing or they are fixing SW problems as I expect that software (firmware) is quite huge and delicate part of any modern advanced camera. Also suppliers might have some issues with out of spec parts or similar stuff. That can take many months like nothing.
Hope my K5 will survive until new camera is available.. now having 137 000 photos on counter..