If you're in the San Diego area, or you're a hardcore fan and you intend to travel to Comic Con this year, you'll want to check out BioWare.
As they posted in their forums , the esteemed developer will attend the big Comic Con event, which runs from Thursday, July 21 through Sunday, July 24. They're bringing Mass Effect 3 with them – that's reason enough right there to attend – along with "never before seen Dragon Age II DLC." And if you're a super huge fan, you can participate in the annual BioWare Costume Contest on Friday; just wear your best "BioWare-inspired costume" and wander into the designated areas for cos-play character photo opportunities. BioWare will give away some cool stuff and you'll have the chance to meet some staff members, too. Somebody just has to dress up as a massive dragon, or something.
We'll let you know when they decide to issue official details for that new DAII DLC.