Recently I installed a new version of the iOS. First impression could be probably described as “what the hell is this”. But quite soon I get used to it. It is definitely a step forward, it is modern, it has good new ideas. UI is also a bit buggy, but this is totally OK for a beta release. Nasty thing is that a man has to do quite some job to make an app (especially an app which uses custom stuff like icons, buttons or gradients) look OK for the iOS 7.