Microosft has announced that it will make its Bing-powered Cortana voice assistant available as standalone apps for rival Android and iOS devices. Cortana is one of the hallmark features of Windows 8.1 for Phones and will be a key component of Windows 10 on the desktop.
Microsoft expects to make all the queries and features of Cortana on Windows available to Android and iOS devices when the apps launch late June. This means that rival phones will have the ability to enjoy a key feature of Windows 10 for Phones before the new OS comes to market. For iOS users, this means they now have a choice of three voice assistants on the platform with Siri, Google Now and Cortana available on their devices.
Source: Microsoft Blog via The Verge