The 4th year of the Mobile Game Conference will be taking place in Seattle, WA from July 13-14. The main themes covered in the conference will be "Design, Construction and Potential." A great batch of speakers are announced, but I'm not a mobile developer, so I'm not too sure how good this conference is going to be. It's put on by The Game Initiative, who put on the Austin Game Conference and others, which does say something of the professionalism behind it. They've gotten more refined with the Mobile conference over the years from what I've heard, but otherwise, I'm not the guy to ask about it.

If you want more info, run on over there and see what's up!