If you are running Windows 10 Mobile things just got a lot more interesting. The Microsoft Messaging app has been updated from 1.0.12715 to 1.10.7000. What's new? Just the ability to integrate Skype messaging.
Skype Messaging was in an early beta for users but now it looks like the feature is nearly complete as Microsoft has folded it into the official Messaging app for Windows 10 Mobile. This release is also newer than 1.0.12748 release of the Messaging Skype preview version bringing along with it a dark grey background (no longer black) and much improved performance (yes, it seems faster).
Likewise, Skype Video Preview is just called Skype Video now and should install along with the Messaging app update.