Quickly, just my impression.
Last year, I got an impression that Dynamic Language camp and Static Language camp would never get along with each other. This year, found that there are some activities to take advantage of the good from both.
As usual, it's good to know and hear about something I have never known before. After all, that's why I come to OOPSLA.
I saw the actual OLPC XO during Dynamic Languages Symposium and Squeak Birds of Feathers session. Also link - XO Giving. It's exciting. I felt like getting one of those and play around with Squeak development environment in Etoy.
There is a Squeak book to download, announced at Squeak Birds of Feathers session.