One of my favorite RIA events is 360|Flex. The organizers, Tom Ortega, and John Wilker, do a great job of getting the community excited and putting on an event with great technical content and great networking opportunities. The 360|Flex events end up feeling like a week hanging out with friends with some great sessions thrown in. And since we've seen an incredible interest on the part of RIA developers to start building things for the iPhone (and 200,000 applications can't be wrong), they're putting on an iPhone development conference in March called 360|iDev.
One of the things that I think is going to be interesting about this particular iPhone conference is the RIA background. The iPhone has become a big deal in the Flash community and gurus like Keith Peters have taken a head first plunge into the iPhone development world. Keith will be doing a session at 360|iDev, so this is going to be a great event to get some Flash perspective on iPhone development.
So if you're doing RIA development and are looking to get started on the iPhone, check it out. It runs from March 2nd to the 4th at eBay's San Jose office. Ticket prices are staggered and start at $200 so first folks to buy get the best prices (I think there are a few $200 tickets left). There are also four tracks: Game Development, Non-game Application Development, The Business of iPhone Development, and Hands-on Training, so there's a lot of range in topics.