Destructoid has this image of what appears to be the PS4 controller attached to a dev kit:

http://www.destructoid.com/what-the-hell-is-this-the-new-playstation-controller--244985.phtml

Could be fake, but it looks legit to me. Looks like a speaker/mic (?) there too underneath the touch pad area. Looks like the shape has been altered quite a bit actually (which I like).

the controller looks really cool! A bit retro but cool nonetheless.

I wonder if the blue light strip on the top is for camera tracking?

I could live with that design.

I miss PSX grey :( Even Xbox played around with their color scheme. Playstation should just get away from the boring asphalt black... it looks too serial (serious)

Looks kinda... fatter.... and the d-pad is different... same as the analog sticks... no start or select buttons... I can't see L1, R1, L2 and R2 very well... there's a strange rectangle at the top right hand side of the d-pad...

I hope the share button thing was true, that's the thing I'm most looking forward to.

Is that a Vita d-pad?

I wonder how they will use that touchpad...

Are those GCN controller ports in the background? :P

The design seems to be a bit clunky, but I could live with it...

Probably mostly for menu/web style browsing. I guess it could have game applications too.