If you haven't checked out 11gr2 yet, you should.. There are tons of new features, and big changes for ASM.. If you are a user of ASM you are going to want to take a big look at this.. You can create your own volumes and take your own snapshots.. This is amazing compared to plain old ASM. You can resize volumes... I can go on and on.
If you are not going on Friday 9/18.. shame on you.. but still look at the ASM changes.. wow.