It might be possible that there is coming new release of iOS and Mac OS Lion,but I think saying that there is coming a new iPhone and it will be named iPhone 4S is something unexpected.
But lets come back to the notification system. iOS notification system should look then like a Cydia Tweak called LockInfo or Intelliscreen.
iOS 5 what’s new Just weeks before WWDC, Apple’s yearly developer conference begins, we’ve been hearing more rumors than ever about what could possibly be unveiled. According to sources, we’ll see iOS 5 , with a complete rework of the existing iOS notification system, as well as widgets.
iOS 5It will bring together Spotlight and your push notifications. You will also be able to but Widgets on your sites or in folders.
iOS 5 Video