Now that the update's release is imminent, developers have started getting their hands on the new version's software development kit, and they're reporting on the improvements Microsoft has made.
The first step is most important
In addition, with Windows 8.1 Microsoft will begin using the same .appx package for apps that Windows 8 apps already use.
Although it's not a full unification yet, this could be the first step toward merging the operating systems for good.
If Windows Phone and Windows RT are using the same apps, there's little reason to keep them separate, after all.
The Windows Phone is 'a changing
The unification of Windows Phone and Windows RT may be the most exciting part of these Windows Phone 8.1 leaks, but there are plenty of other features being revealed by developers too.
For example, Windows Phone 8.1 appears to let users choose different default messaging apps for the first time.
There's also a "Battery Power Sense" feature to monitor battery life, VPN support, a "Storage Sense" feature for installing apps to SD cards, newly separate video and music apps, a new podcast app, and the rebranding of SkyDrive to OneDrive.
Multitasking is different in Windows Phone 8.1 too, according to this developer. Pressing the back button now sends apps into the background instead of closing them, while swiping downward closes them, much like Windows RT. The camera app has a new layout as well.
Finally the browser has been updated to Internet Explorer 11, Facebook account and photo integration appears to be gone (though Twitter is still present and iCloud has been added), and there's support for on-screen buttons, possibly to accommodate future phones without physical buttons.
But those are expected to appear before Microsoft sends the final version of Windows Phone 8.1 to developers around April.
- Before there was Windows Phone 8.1, there was Windows 8.1!
Via The Verge