Nikon has updated the D300 with the D300s. Adding 720/24p video and dual card slots (1 CF, 1 SD), a quiet shutter release and an updated processor and AF, the D300s retains the 12.3mp sensor and 3” LCD monitor. The most important factor for underwater shooters and manufacturers is that the back layout has changed. It will not fit in a D300 seamlessly. There will surely be ways to modify the housing so join the discussion in our forums as our resourceful members figure out a way with the manufacturer’s help.

On the low end, Nikon also announced the D3000, a 10.2mp $599 basic DSLR with a 18-55mmVR lens.

New D300S back:

Old D300 back: