Besides the obvious new features -- like the hot shoe, ability to use an external microphone, great eye-level viewfinder, and RAW shooting -- I really like the new control ring on the lens, which is very handy for manual focusing (especially with the new switch for quickly going from auto to manual focus)

hot shoe.. well check out the info on Nikons site

I also like the ‘Hot Shoe’ that was lacking on the P900

The main reasons I wanted this camera was the extra 1000 mm of zoom and the hot shoe, but the P900 just took better pictures.