Last month Google said that there will be a number of new features that will be coming soon on Google Messages and one feature that has not been highlighted is the new Photo Picker
Some users reported that the Photo Picker feature has started appearing on the phones. The Photo Picker is launched from the left of the text field and shows a live camera with a shortcut to open your device’s “Gallery” next to it and the last image in your camera roll below that.
Swiping left lets you view 22 more images, while you get a shortcut to quickly open the camera at the left. Your most recent shot gets the largest preview, while everything else is shown three to a row.
As you go down, the pane gets larger and shows 15 pictures at a time. In the bottom-right corner, you get FABs for the camera and folders.
Although this feature is not on many devices but will be soon there