Hi Lars,You can do this today. When you create your project make sure to select that you want two top-level collections instead of one. That will give you the ability to create phone collections and tablet collections (put the same articles in each one), and then apply a different layout to the phone collections vs. tablet collections.This is a bit clunky, I'll admit, if your content is shared. However it will work and will let you share content across the two platforms.Neil