You can turn off shake to undo in iOS 9? Hallelujah!Maybe everything will go smoothly Tuesday but why chance it? The last thing Apple needs is Twiiter to be full of people complaining about not catching the launch of Beats 1 because they couldn't download 8.4. Speaking of, if you search Twitter right now lots of people are confused about Apple Music and especially how iTunes Match will work. I'm a bit shocked at how poorly Apple has explained it.