- Better high ISO performance? Probably yes.
- 14 fps? I seriously doubt this unless this is in live view mode without the mirror flapping. As far as I know the Canon F1n High Speed camera with 14fps was the fastest ever SLR camera, but it used a fixed pellical mirror. In terms of speed, the runner up was the Nikon F3 High Speed camera, with a top speed of 13fps, but utilizing a pellical mirror as well.
- HD Video? Almost certainly given current trends, but I do hope it is not 720p again - that would be disaster in marketing terms, because Nikon's competition is sure to offer 1080p.
I wish that Nikon were more forthcoming about their designs and limitations and challenges they face. As a customer I would appreciate if they explained why the D300s is limited to 720p, or why the 14-bit mode shows down the camera and increases the shutter lag. Is it a limitation of the sensor? Is it a limitation of Expeed processor? It would be good to know. Leica seems much more open about its designs, and this is widely appreciated.