"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Microsoft Announces Cortana For iPhone Available Later This Year
Microsoft unveiled Cortana on Windows Phone 8.1 last April as the company's answer to Siri and Google Now, and the company is also bringing the personal digital assistant to the desktop as part of Windows 10 this summer. Cortana's features include contextually-aware reminders, routing and mapping, current weather and traffic conditions, sports scores, biographies and more.
Some of Cortana's features on Windows Phone won't initially be available on iPhone and Android smartphones, including toggling settings, opening apps or "Hey Cortana" hands-free invoking of the personal digital assistant. Microsoft will also release an updated version of its Xbox Music app for iOS with free streaming playback of your music files and playlists from OneDrive in late June or July.