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Amigos,
NO me he dado el trabajo de traducirlas del inglés pero es un inglés super técnico, no muy dificil de entender. A pesar que son características del nuevo SDK, son las que vienen en la próxima actualización de Windows Phone.
Lista de novedades Windows Phone 8.1
-NEW File picker (see lede image)
-VPN (Virtual Private Network)
-OneDrive (previously SkyDrive) with integrated file browser (just like Windows 8.1)
-Filter through installed apps by usage/install date
-Select multiple tiles when customising the Start screen
-More efficient multitasking
-Ability to install apps on inserted SD Cards
-Internet Explorer 11 improved with WebGL and Normal mapping support
-Separate volume controls for ringer, media, etc.
-Bing smart search (similar search system as Windows 8.1)
-Xbox Music and Xbox Video as standalone apps instead of the Music + Video Hub (allowing more updates to be pushed)
-Redesigned Xbox Game Hub
-Facebook and Twitter integrated more deeply into the contacts Hub "Better" camera app (the same one as Windows 8.1)
-Quick settings access (Wi-Fi, Bluetooth) by doing a quick swipe from the top of the screen
-Action Center accessed by doing a full swipe from up to the bottom (separate from the Notification Center)
-Silent notifications which go directly to the Action center
-Possibility to mark a Live Tile as read by swiping from the left of said tile
'Cortana' smart agent performs the same tasks as Siri and Google Now and even more, including data from Foursquare (MS INVEST)
-Auto-updates for apps (just like Windows 8.1)
-Better backup functionality
-Improved keyboard with Swype support
-Bluetooth 4.0 LE (to non-Lumia Windows Phones)
-Feature to mirror Windows Phone screens to TVs and/or monitors
Saludos
Gracias dbahamondes!
Muy interesantes mejoras
esto se está actualizando así que estas son solo características parciales.