Bioware will be at San Diego Comic-Con! Here's their full schedule.

Both Dragon Age signings are at The Strain Signing Booth:
Thursday, July 24
3:00 p.m.–3:50 p.m. DRAGON AGE: Patrick Weekes, Nick Thornborrow, Ben Gelinas

Saturday, July 26
10:00 a.m.–10:50 a.m. DRAGON AGE: Patrick Weekes, Nick Thornborrow, Ben Gelinas

And a panel:
Friday, July 25
The Art of Video Games (w/Nick Thornborrow): 4:00pm – 5:00pm
Room 7AB

There are also a couple of signings set up for Mass Effect. For Dark Horse's full signing and panel schedule, click here.