For those running Windows 10 on the Slow or Fast Ring, you will want to grab the just-updated Skype Preview app from the Store (listed under 'Get Skype').
Build 184.108.40.206 is now available up from the previous 220.127.116.11 from a few weeks ago and still noticeably behind the leaked universal builds that were also available for Mobile (11.6.72).
Unfortunately, we ran a side by side with the older and newer versions and noted nothing new of interest, although we suppose there could be some plumbing changes to make the app more reliable and compatible with the latest Insider release.
For now, you can go to the Store and get the update. Let us know in comments if you spot anything different.