We reported via Microsoft’s Gabe Aul that Windows 8.1 RT Update 3 will come to Windows RT devices like Lumia 2520 in September. While its was expected that this update will bring RT devices close to Windows 10 UI wise, now it gets confirmed officially that the update will bring some Start Screen and Lock Screen changes. Microsoft has update the Windows 10 FAQ page confirming this,
If you’re running Windows RT, your device won’t upgrade to Windows 10. We will have an update available in September 2015 that will improve the Start menu and lock screen. Check Windows Update on your Windows RT device to make sure it is ready to download the update when available.
