Within iOS 8 Apple introduced the ability to access your Phone Favourites (on iPhone only) and Recent contacts (on all devices) to provide quick access from the App Switcher screen.
AirDrop between supported Macs and iOS devices has been fixed with iOS 8.1.
It looks like that with the release of iOS 8.1, iTunes WiFi sync has been fixed. Prior to 8.1 it was a hit and miss when trying to sync via WiFi and seemed to only work if you restarted your iOS device.
If you are a fan of syncing your devices with iTunes via WiFi, it is recommended you update your devices to iOS 8.1.
Recently I experienced an issue with utilising outlook.office365.com to access Office 365 mail from Outlook, Web (OWA) and iOS apps when on a particular internet connection. This only affected Apple devices and I had no issues with using Windows based computers on the affected network.