Windows Insiders that are on Fast and Slow rings are able to use the panaroms featre im windows camera on their Windows 10 Mobile device from many builds. Microsoft has rolled out this feature to Windows Insiders in the Release Preview ring also.
The Panorama mode is now coming to all Windows 10 Mobile devices via the new app update. Microsoft today released a new update for the Windows Camera app, which introduces the new Panorama Mode. So if wanted to try it, you can use this feature without runnig Windows Insider builds.
Open up the Windows Camera app, click on the Panorama icon and you can move the ca,re to record panaroma pictures.