Are you talking about the ability to change the ringtone of incoming email? If so, I still like default the best. The other ringtones seem unprofessional to me -- and i'm 17... haha. But to each his own. The most helpful feature of iOS 5, personally, is being able to use the "+" on the volume rocker to take a picture.
You've obviously never been in a room full of people who have iPhones and push email. Tri tone is a great email notification sound.
Totally agree. I live in a house with 2 other people with iPhones and iPads. We're constantly saying "Was that yours or mine" and then trying to decide wether it came from the iPad used for business or iPhone for personal.. Yeah it was hell. Now it's beautiful!
I'm attending WWDC so I can't say much because of non disclosure, but I'm thrill that email and calendar will be able to use custom 'ringtones'. It's been the most requested feature of our AutoRingtone customers.