Sony may have a successfull full frame mirrorless line, but they haven't forgotten about their DSLTs. The Sony a99II is a fast SLT (like an SLR, but with a translucent mirror) that boasts 12 fps burst shooting while still using autofocus.
The update to the original a99 doubles the burst speed while keeping the autofocus active to track any movement between frames. The a99II's autofocus system was also upgraded from 19 focus points to 79 or even a whopping 399 when using the hybrid autofocus sytem.
While both versions use a full frame sensor, the a99II was upgraded from 24 megapixels to 42.4, enhancing still photo resulotion and also allowing the camera to bump up to 4K for video, at 30 fps. Using 1080p upps the frame rate to 120 fps, helpful for adding slow motion effects. SOny also says the the sensor design was enhanced to increase the camera's light sensativity.
The body of the Sony a99II keeps much of the same style and features, still using a three inch tilting LCD screen as well as a traditional viewfinder. The camera is also weathersealed, like the previous version. The body is about eight percent smaller, however.
The Sony a99II has quite a few features going for it, including the quick burst speed, 4K video and enhanced stabilization system, though the battery life is a bit on the low side for the category. You pay a bit more for that speed, but the a99II is significantly less expensive than Canon's EOS-1DX Mark II or Nikon's D5. If the $3199 price is still a deterant, the Nikon D500 and Canon EOS 7D Mark II are also speedy cameras, but wihtout that full frame resolution.