Microsoft could have plans to give their Xbox Avatars an update in the near future. According to DualShockers they've located two job postings (here & here) for Xbox software engineers. This overhaul appears to be not only for Xbox One and the 360 but for multiple Microsoft platforms. You can read the original DualShockers article here.

I've located a 2nd article detailing a secret team being formed to take Xbox into the future. Their goal "to push the envelope of today's & tomorrow's technology as we explore new ideas from the ground floor." You can find the job posting here.