Apple Testing New Photos Web App on iCloud
Apple is currently testing a redesigned Photos web app on the iCloud website. The application is nearly identical to the one on macOS Sierra and includes similar sidebar for frequently used items as well as the same layout of images. This section of iCloud is available only for those who use the iCloud Photo Library. You can turn it on in the Settings menu of your device.
Here’s what
The iCloud.com updates are strictly navigational improvements, with no addition of the new macOS Sierra Photos features like Faces and Memories. It's unclear how long it will take for the new changes to launch on a broader scale after debuting on the iCloud.com beta site.
New Photos section on iCloud is currently a beta. It is not yet available for all Apple users, but things may change soon.