Why do peeps update as soon as it's released. If you've got a gadget that works I can't get it into my head why you would want to update straightaway. It's always going to have problems with apps.
Take Microsoft (Please) I used to wait at least 6-9 months until all bugs had been ironed out before doing any updates and hey presto, it seemed to be ok - well as reliable as Windows could be.
Just my take on it anyway.
To be fair I have never experienced any issues with the iOS updates.... At least not once I got used to them...