Microsoft announced the arrival of Windows Phone 8.1 Update, which will be in Developer Preview on August 4th, 2014 and is expected to be delivered through the wireless phone carriers “in the coming weeks.”
Several features are coming with this update, including Smart case support, a new Apps Corner hub, VPN over WiFi, Smart Screen Folders and Voice over LTE.
Support for some higher screen resolutions will also be included.
Microsoft’s Windows Phone Blog has details. http://blogs.windows.com/windows_phone/b/windowsphone/archive/2014/07/30/windows-phone-8-1-update-brings-cortana-to-new-markets-new-features.aspx