Can someone tell me what platform I should choose in the content pipeline tool in order to generate content for a UWP app? There are only three options: Windows Phone, Windows and Windows Store app. Thanks in advance! 
Select “Windows Store App”… you can also select “Windows Phone” or “Windows” as they all generate the same content essentially. This is an area where we’re looking for a better solution that is clearer to follow.
Thanks for the answer Tom! 