Microsoft is starting a private beta for its iPhone keyboard

Microsoft has its own mobile operating system, but that hasn't stopped it from opening a public beta for a new iPhone keyboard. That's right -- Microsoft's Garage incubator began the private beta for its Word Flow keyboard on Thursday, allowing users to sign up for access to the application as it's being refined. Users who get access to it will be able to install an app that replaces the iOS software keyboard with one made by Microsoft. The Word Flow keyboard's leading feature is a one