iOS 5 : new notification system and widgets

In a week WWDC 2011 will open its doors. The occasion is likely for Apple to unveil its new products. Among them iOS 5, the new version of its mobile operating system  is the favorite. Meanwhile rumors continue to multiply.
According to our colleagues iOS 5 will be come with many changes. The notification system would be reviewed in depth and widgets would be introduced. Unfortunately we have not extend further on any details. It will have to wait another few days to discover iOS 5 and its novelties.However according to our colleagues there is no doubt that the  Apple does not unveil new hardware at this WWDC. The ads will therefore focus only on software