In the picture you see the normal Dualshock controller layout, plus a rectangular touchpad in the center, an unknown button the the top-right of the D-pad, a PS Move like light at the top, bigger and closer D-pad buttons, and no start/select button.
Unless the mystery button is a start/select button (doubt it), it's supposedly a "share" button.
The key points (cllick the link for a couple paragraphs about each point)
-It's probably out this Holiday season
-We probably won't hear every detail tonight
-The pictures of the prototype controller are real
-Console will support sharing in some way
-Console will feature cloud gaming (PS3 games played via stream)
-Some games are already announced- Witcher 3, Battlefield 4, possibly The Phantom Pain (MGS5)
Gametrailers, Kotaku, and IGN will have a live stream of the event at 5 pm CT