iPad Pro users will need to pony up for an Office 365 subscription

Microsoft surprised the tech world two weeks ago when one of its executives appeared on Apple's stage to demonstrate new features for the company's Office apps on the new iPad Pro. While that moment in the spotlight showed off Microsoft's commitment to Apple's platform, there's an important catch that wasn't mentioned on stage.As it turns out, iPad Pro users will have to pay for an Office 365 subscription if they want to edit documents on Apple's new tablet. That's a big difference than the curr