Soak test invites are rolling out to T-Mobile Moto X owners who are part of the Motorola Feedback Network, indicating that a new software build is on its way in short order. There's no clear indication of what the software update will bring, but based on the timeframe from previous soak tests the update will be hitting devices soon and we'll have a better idea at that time.
Following a successful soak Test, the update should roll out to non-testers shortly after the initial rollout is complete. Are any of you in the Feedback Network for your T-Mobile Moto X and seeing the Soak test arrive on your device yet? Be sure to hop into the forums and let other members know how it's work out for you.
More: Moto X Forums