Well, sort of. I wrote a few chapters in the iOS5 by Tutorials book that’s the latest project from raywenderlich.com.
I’ve spent the last couple months scouring the sparse documentation on Turn Based Gaming and Core Image filters. It has been a real stretch for me, as I’ve only been an iPhone programmer for a couple years, but what a great learning experience.
I kind of feel like I’m capable of doing whatever I want now. I remember when I first got started, there was no way I’d be able to use the object class reference material to put together anything that worked. But, now I can. It’s pretty awesome.