I'm not in the room right now sadly, and Marvel are making sure their content is exclusive to Hall H it seems, but I do have many birds in there feeding me information.
There was no Thor: Ragnarok footage shown, but what was, I hear was a very funny video about what Thor and Hulk were up to during Civil War. I hear it is 'skit' like and mostly features Thor moving to New Zealand to live with a guy names Darryl. Hopefully we get that online soon.
The meat though, supposedly comes at the end of the clip when a piece of footage was shown showing Gladiator Hulk in an arena against Thor. This almost certainly is Planet Hulk stuff that was teased today.
Oh, and this rather Retro logo for the movie has been released too. It's pretty wild.