Just now Microsoft announced it upcoming new Windows Phone OS, version 8 (Apollo). You can see few images below slider show. In this they show little more features in new smartphone OS.
* Live APP (you can see your Facebook updates in lock screen itself)
* Kids corner
* People room
* Data planner
* Pandora one year of ad-free music (coming next year)
* New Skype
and many more.
You have different hardware and in different shapes and also in different colors. All Windows Phones going to ship thought the world in November month. In USA Verizon, T-mobile and A&T with devices HTC 8x and 8s and Nokia lumias 810,820,920 and Samsung ATIV
For developer Windows Phone 8 SDK will be available to download from tomorrow.