Windows Phone 8.1 Blue Update To Add On-Screen Navigation Buttons

On his Twitter account, renowned leakster @evleaks has shared a part of a screenshot from Windows Phone 8.1, which shows on-screen touch navigation buttons. Currently, the three-button combo of Back, Windows and Search keys aren't part of the user interface, like they have been on many Androids since Ice Cream Sandwich, but below the screen in either hardware or capacitive touch flavors.Partial Windows Phone "Blue" screenshot. pic.twitter.com/LnV9h0MMKL

— @evleaks (@evleaks) December 14, 2013

evleaks' tweet suggests Microsoft is going to change that and will either go for software navigation keys or diversify the portfolio of Windows Phone devices giving OEMs the choice between hardware and virtual buttons.
Other Windows Phone 8.1 rumors suggest
 we're in for a notification center, enhanced multi-tasking and a Siri-like voice assistant.
We suspect Microsoft will official unveil its upcoming WP 8.1 OS at their Build developer conference in April, 2014.