I agree that super telephoto is the obvious hole in the Sony range, but there are other gaps too. It will be interesting to see which gaps get filled first. I like the high end lenses, which is clearly where Sony are aiming. The collaboration with Zeiss is a good one in this respect, as Zeiss make superb lenses, though no super tele's.
As for the camera itself, it is hard to fault, going by the reviews. I guess it will take a while for sports photographers to start changing. It will be interesting to see the camera line ups at future big sporting events.
Update - I hadn't realised that Sony also announced a 100-400mm G lens. That should fill the telephoto gap for most sports shooters.