Boy have I been waiting for this. Folders.
So how will it work?
Go to a page full of apps and say you want to make a folder with games in it for example. Push finger on an app, they start to jiggle. Drag one on top of another and it instantly makes a folder. Also automatically names the folder based on the category these apps came from on the app store, but you can rename it if you want.
You can have as many folders as you like and they can be dragged to the dock.
This will take iPhone’s homescreen capability from 180 apps to a huge 2,160.