Other features listed in the thread include the ability to alternate between default messaging apps, a new way to track battery life, support for the installation of SD cards, a new YouTube player and plenty more. Microsoft has also changed how users multitask on Windows Phones — hitting the back button will no longer terminate an app, but instead suspends it in the background.
Of course, there were also a few expected features that didn’t make it into the recent SDK release. The rumored Cortana personal assistant is missing in the current developer build of Windows Phone 8.1, along with Action Center, Bing search and the store. UI changes also appear to be relatively minimal, most notably the lack of
Check out the full list of leaks here, and then wait patiently for the full reveal in April.