Highlights from press day: http://www.ew.com/article/2015/12/06/live-blog-star-wars-force-awakens-press-conference?1212

Quick hits -

-J.J. thinks that Maz and Yoda have met at some point
-J.J. explicitly states that there won’t be a post-credits scene
-Production on Episode VIII begins next month
-Rian Johnson has had/is having lengthy discussions with J.J. about continuity

The rest is mostly the cast sharing stories about production and stuff like that. No revelations, but very funny and charming. Worth a look.