Windows Phone 8.1 upda
There seems to be a bit of a leak in the department that deals with Microsoft's updates as, in addition to a recent build of the Windows 8.1 update leaking online in past weeks, there have been details regarding the incoming updates for Windows Phone 8.1 as well.
An unknown person who apparently has access to Microsoft's new SDK for Windows Phone 8.1 has dropped some information, including that Microsoft is working to tie development between Windows and Windows Phone together. This makes sense given their recent interoperability bent but it's all but confirmed now.
Other features that may be showing up in the update include the ability to install apps to the SD card and there are a few new monitoring apps for batteries, dara and storage being built in, as are several Microsoft-specific services. Changes to the SMS delivery system are incoming and there are also going to be a range of cosmetic changes to the mobile operating system as well.