According to an image sent to Joystiq by an anonymous tipster, it looks like Microsoft is rewarding all the participants of the Kinect beta program. A letter, purportedly written by Xbox Live VP Marc Whitten, is offering to let testers to keep their Kinect sensor now that the beta program is over. In addition, testers will also receive a code to redeem a free download of Kinect Adventures. We're attempting to verify with Microsoft, but it certainly makes sense. After all, it stands to reason that some testers won't want to part with their sensor and be reticent to send it back to Microsoft. It wouldn't be a stretch for people to suddenly "lose" their sensor either.
We'll update this post if we receive word from Microsoft.