Well I finally got arou d to installing th beta tonight. Tis has been the longest I have waited whe they are released every year. I was mainly holding out due to the fact that I was buying a galaxy s3. Needless to say that experiment lasted for only two hours last night before returning it.
Anyway...things I notice...
1. Siri is working again like it did during the iOS 5 betas and immediately after the 4s release. I think all of Siris problems are directly associated with server load. I am not talking about just the speed of it, I believe when there servers are under large loads it gets worse at understanding what you are saying. Siri worked perfect for me like I just mentioned up until millions of people started using after the 4s release. Now that it's working perfect again here with the beta I would say Siri for its 6 is on its own server or whatever, separate from the iOS 5 version. I am sure it will slow down again after release. When it works like this though it is quite enjoyable and useful to use! Sports on Siri is noice!!
2. Do not disturb, great add on.
3. Was the screen brightness increased or something? This thing is easily 3 times the brightness it was before! I have it set on about 10% now and it's as bright as it was at 60% in iOS 5

. Max brightness is old blind someone!
4. Ringtones...god, make this simple please...still a pain in the arse.
5. FaceTime errors, I was getting connection errors the times I tried it