IOS 7.1 on iPhone 4 performance?

Does anyone have any comments on the performance of the iPhone 4 on iOS 7.1. Cuz I was looking to see if I would upgrade from iOS 7.0.6 or not. Also, can someone screenshot any important stuff, like the various UI changes (phone caller ID screen) etc. Etc. Is it still laggy or really fast?

Screenshots are preferred.

It should speed things up. My friends iphone 4 on 7.0 is VERY VERY laggy.

Always give it a few days, I never download an update until its been out a week or more.

Performance will probably stay the same or not noticeable from 7.0.6. But jailbreak is not possible on iOS 7.1. All my friends with iPhone 4 and iOS 7 are complaining about speed and one of them didn't noticed any improvements with iOS 7.1