I have presented session at iSeries DevCon pretty much since the conference's inception, and this year is no exception. Of course, I'll be doing the heavy lifting on EGL and some other related topics, but there are lots more great speakers and sessions. In my humble opinion, there isn't another conference that better provides both true nuts and bolts programming techniques with a solid application of future-proofing technologies.
Trevor Perry and I have recorded podcasts about what you can expect; click on the link to go to my podcast.
You'll have to enter an email address to get the real link, though.