If you're a Windows Insider on the Fast Ring of Windows 10, then the Camera app should be updated for you. A new version of the app is out to Fast Ring Insiders with a revamped look of the user interface.
Folks on Aggiornamenti Lumia have spotted the following change log
- UI changes: The new version moves the hamburger menu on the left, comes with a new style of the menu that includes photos, videos and panorama. It is now moved to the right, and features elements of fluent design.
- New Pro Mode: You can enable or disable the Camera Pro mode. Turning it off will show the basic features only.
- Various fixes and improvements.
The changes are included in version 2018.1213.30.0 of the Camera app.
If you are a Windows Insider, you might be interested in visiting the app's page on the Store.