Microsoft is pushing out an update for their very new Messaging Skype and Skype video Preview apps for Windows 10 Mobile. Build 12748 is now live in the store up from the previous 12738 version, which was released this past Sunday. As usual, there is no changelog. However, we can say with certainty that the app is more stable compared to the older version. Previously, on our Lumia 1520 the app was very unstable with frequent crashes (sudden closeouts) that made the app very tough to use as default. However, after installing today’s update and rebooting the device that app is much more stable.