Saturday's panels included DC Universe, a spotlight on Francis Manapul, and the Siegel/Shuster/Superman lawsuit. I can't find anything yet on the last two, so here's the DC stuff.
DC Universe, via Newsarama:
Mon-El's new costume when he joins the Justice League:
The team will have: Mon-El (in a new costume with a Superman "S" on it), Dick Grayson Batman, Donna Troy and Hal Jordan. The other characters are a "mystery," says Robinson. One of them "mystery" members is Congorilla, Robinson pointed out.
Johns said the Legion are going to be in Adventure Comics and Superman, and play a big role the rest of this year and next.
DC Universe, via CBR:
...the new [JLA] team will feature Mon-El in a new Superman-inspired costume, Dick Grayson as Batman and Donna Troy who "I'm going to make her kick ass in this book."