I am currently testing iOS7 Beta 2. I am not a big fan at all. I am sure there will be more polish before the official release, but I'm still disappointed.
Not as fluid as webOS. You still have more steps to accomplish one task. There is now a back swipe option for messaging, mail and websites, but not universal throughout the OS or apps. Spotlight is now a swipe down feature from the springboard but does not give you the option to search the web. It's no "just Type". Design and textures have been created into layers. most menus have a white background to them. Text and fonts are very narrow and difficult to read.
Folders and Icons:
Apples default icons look very one dimensional. Almost candy color looking. Something you would expect on the leapfrog or kids tablet, lot an apple product. Folders are just a light grey color and give no shadowing or texture look to them. The keyboard changes color slightly depending on the task you are trying to accomplish. White keyboard for texting, dark grey keyboard for searching in spotlight. not very uniform at all.
The camera app has now introduced scrolling for Carmer, Video, Square pic or Pano. The capture button is no longer transparent on the screen but a solid white or red. This gives you less of a clear view of what you're capturing.
I know iOS has been stale for the last few years. iOS7 is a new look but might not be for everyone. I personally do not like the new look or feel of using the interface.
I still own a launch day pre- and a Touchpad. I still believe webOS just nailed it! Multitasking, UI and totally ease of use. It's interesting seeing Blackberry, Android, iOS AND Windows phone taking ques from webOS. But nothing can every replace webOS as a complete opperating system. That's why I baby my pre- and Touchpad so much Still use them both to this day!