Not true. When it says full-screen, they mean full-screen. It has completely removed the old multitasking. You cannot have two apps up at once. One of the most common things I do is to pull a tab off of Safari into its own instance and use split-screen on two Safari windows. You can no longer do that. Split screen and slide over are completely gone. The three dots that let you switch between app instances is also gone. The only way to get to a separate instance of Safari (or other apps that let you run more than one copy) is to go into Expose and swipe until you find the right one. That becomes a royal pain because you may have to go through dozens of apps before you find what you’re looking for while swiping.