Abrahms is the back of the head we see there. You're right, Kennedy and Knoll are there. The others are Rick Carter (production designer, "boob hands"), Jason McGatlin, and Kim Libreri.
It's a picture of a roundtable. Apparently I'm the only one excited about the new pictures of the Millennium Falcon in the background. There are shots from the other movies though as well, Empire and Clones.