According to evLeaks, Windows Phone 8.1 will support on-screen, virtual back, home and search buttons, rather than the current capacitive ones.
No information on the implementation was revealed, or if all Windows Phone 8.1 devices would need to have virtual buttons, but it seems likely that the move was made to make it easier to Android OEMs to repurpose their Android handsets for Windows Phone devices.
Ironically the latest move would take us back to the start of Windows Phone, when the Nokia Sea Ray, which went on to become the Nokia Lumia 800, was also first seen with virtual buttons before the final design solidified on hard buttons.
How do our readers feel about this move? Let us know below.