Fujifilm released several new promo videos for the upcoming GFX 50S mirrorless medium format camera. It is interesting to note that all videos end with the banner "GFX see you early 2017" (shown above). I think it is safe to assume that all technical details, pricing and pre-order info will be officially announced in early 2017 - probably together with the X100F and X-T20 cameras for the CP+ show in Japan.
Specifications and details on the Fuji GFX can be found here.
Here are the videos:
Via Fuji Addict