ElitePinecone over on the Bioware Forum Twitter thread has compiled the list of known Dragon Age presentations:

EA Press Event - Monday June 9 US Pacific - Click here for your local timezone
http://www.ea.com/e3

 

GameTrailers All Access - Monday June 9 US Pacific (*immediately* after EA's conference, the session is 1 hour and DA:I is a part of that) - Click here for your local timezone

http://www.gametrailers.com/e3

 

Twitch DA:I session - Tuesday June 10 US Pacific - 30 minutes long - Click here for your local timezone

Livestream link

 

IGN DA:I session - Tuesday June 10 US Pacific - 20 minutes long - Click here for your local timezone

http://www.ign.com/events/e3