Hello. Apple introduced notification sync with iOS 7 release. http://www.cultofmac.com/230901/ios...make-the-iphone-theft-rate-plummet-wwdc-2013/ However, I have MBA latest OS X Mavericks version, iPad air and iPhone 5S iOS 7.1.2 and for example if I read new email from stock mail app, it doesn't mark as read on my other devices. It never worked for me from iOS 7. It is annoying because if you get email, you need to unlock and open mail app on every device to get marked as read emails. Anyone tried if it is working with iOS 8 beta?