While during today’s event it was revealed that Windows 10 for Phones will have “Bluetooth Keyboard” support and Microsoft at the same time also announced a “universal foldable keyboard”. Now, going through the details of this keyboard reveals that Windows Phone devices will have the keyboard support even without Windows 10 for Phones and with arrival of “Windows Phone 8.1 GDR2“.
The system requirements for this Bluetooth Keyboard reveal this,
Compatible with tablets and smartphones running one of the following operating systems:
Windows 8, 8.1
Windows Phone 8.1 Update 2
Apple iOS 7-8.1
Android 4.3-5.0
Other
Tablet or smartphone must be Bluetooth® 4.0 enabled
Device must have Human Interface Device (HID) keyboard support.