This is certainly cool, and I do hope that Apple makes some changes to iOS in the next update...but overall this doesn't change much.
Multitasking is essentially the same, but looks a little prettier. The mini cards don't actually give you much information because they are so small. Maybe slightly faster recognition of a specific app, but not by much. The settings is a welcome addition, but jailbreak users have been asking for quick settings in every iOS release.
Personally I am expecting Apple to do things much bigger that just making the UI prettier and adding quick settings given the major changes in the iOS team's management.