Coinciding with the more general release of Windows 10 build 10586.29 Microsoft has updated the Windows Camera app too. Build 1201 is now available in the Windows Store, which is a change from the previous Build 1088.
Unfortunately, there does not appear to be any new features or functions that we were able to discern in our few minutes in using the app. We compared the app before and after on two Lumia 950s and did not notice anything different.
If you do find anything unique or a bug that's been fixed let us know in comments.