The new trick is that when you tap on the bottom 10%, it’ll make that app take up 90%, and the app you were just in will be downsized to the remaining 10%. As for why this is considered better than pressing the multitasking button twice, I have no idea. I’ve honestly never enjoyed the split screen feature on my phone, but I multitask a lot.

Engineers need to stay busy I guess, even if every feature a phone needs has been implemented.