At MIX11 this year, Microsoft took the stage and announced that the next version of Windows Phone is coming. To add to that, Microsoft also commented that developers will be able to download it free in May this year.
Several new features are being added to the update such as multitasking with background processing, fast app switching, audio and file transfer as well as deeper integration with apps in to the operating system.
The new update will also allow developers to have deeper access to the sensors on the device so that the gyro and compass will be available. Access to these will come through the Motion Sensor library.