While we’re setting out on our vacation in the Central USA, I’ve been thinking about what I should write in a WWDC wrap-up post – and it’s been surprisingly difficult. Update: also read John Gruber’s excellent wrap-up.

As usual, most of the juicy details are under NDA, and I try to be careful with that. Some details about Xcode 4 and LLDB have been published, others have been leaked, and this is indeed the parts I liked most; and I don’t doubt more will be made public Real Soon Now.

I can say some general things about the sessions. While there were relatively few Mac OS X-only sessions – Damien Sorresso’s excellent launchd talk was the one I found most enlightening – to my surprise, there were many sessions that applied both to iPhone OS/iOS 4 and to the Mac. I did audit some non-Mac sessions and most of them were informative and well-presented, and I find myself quite interested in doing an iPad app.

While over 2/3rds of the developers present, supposedly, were doing only iPhone/iPad development and were new to that platform, quite a lot of Mac old-timers were present and I had great fun meeting most of them. I was also gratified to, again, being told several dozen times that someone likes and is using my RBSplitView framework.

As usual, I found San Francisco is a great place to visit – and to eat! Special thanks to Russell of the San Francisco Apple Store for helping me buy my iPad and a brace of accessories, and to all of you – you know who you are – who helped me commemorate my birthday.