Microsoft has released a software development kit (SDK) for SmartGlass just a few weeks after announcing it at E3. The system allows various portable electronics devices – like, say, tablet computers or smartphones – to synch-up with an Xbox to display information based on what’s going on in-game: Showing a world map, for example, or allowing the player to create plays in Madden on your device for in-game use.

Now, the SDK is available to any developer that’s part of the Microsoft Game Developers Network. The kit includes a sample application, a SmartGlass JavaScript library and the Xbox SmartGlass studio, which devs can use to create SmartGlass activities.

Xbox SmartGlass debuts this fall and all first-party Microsoft titles will implement the system.