Instagram for Windows 10 mobile gets the new look too , which is lined up in the store but you cant download it as yet.
The store throws an error if you try to install it and if you uninstall the Instagram app, you wont be able to install it till the error goes away. So for now, hold on to the current build and because the new one is almost there.
Screenshots on the app page show the changes as well as the change log :
We have a new look! Our updated icon stays true to the camera and rainbow. The simpler design puts more focus on your photos and videos without changing how you navigate the app.