According to Nokiapoweruser, the Windows Phone 8.1 GDR1 - as the first update to Windows Phone 8.1 is called - is being tested by manufactures, the first 'public' step in the lifecycle of an update. The report claims the update brings Android and iOS-like feature to create folders for simpler management of apps. Users will be able to drag and drop tiles on top of other tiles to create a folder. This is not completely unexpected, since last month the company accidentally made live one of the webpages detailing steps for creating a folder on Windows Phone 8.1.
Another feature in Windows Phone 8.1 GDR1, as per the report, will be support for smart flip cases for devices. Smart cases have become rather popular these days with the likes of HTC dot case, LG Quick-Circle case, Samsung S-view case, and more; and it seems Windows Phone will get support for them.
Additionally, the Windows Phone 8.1 GDR1 update change log obtained by the website suggests it will include Voice over LTE (VoLTE) support, dual-SIM support for both GSM and CDMA networks, a medium Live Tile for the Store app, a phonebook entry for virtual assistant Cortana to enable integration with car's navigation system, support for 7-inch devices and WXGA 800x1280 pixels resolution devices.The next logical question is on the timing on the update, and while the original report is silent on the subject, The Verge says Microsoft plans to release Windows Phone 8.1 Update 1 to developers within this week, failing which, it will happen next month (August).