If you are one of Windows Insiders and running Windows 10 Mobile Build 10149, you can quickly check Store Beta for updates to some native apps. As can be seen in screenshots below Camera, Voice Recorder and Calculator have received updates on Windows 10 Mobile.
Camera has updated from version 5.38 to 5.42 and brings one new setting of “change where photos and videos can be saved” along with new icon for gallery in camera viewfinder. Though if you tap on this option it takes you to the “All settings” page, so it looks like WIP at this stage. The Camera app also seems smoother and faster all around.