SQL Server 2016 for FREE (almost)

Developer edition of SQL Server 2016 (and 2014) is now available for free download from here. BUT as we all good know there ain’t free lunch so instead of paying 50 € (or so) for Developer Edition we’ll pay for it with letting Microsoft know how we are using SQL Server features . I saw this in CTP3 installation but I’ve been expecting that this feature will be removed in RTM. It seemed ok that MSFT wants to know our experience with the product and capture potential problems to fix them before releasing final version.