So my primary phone is a Lumia 1020. I recently made a purchase in the app store for Puzzle Quest 2. I was excited to see this app in the Windows 10 store (on desktop), but it does not exist there. I'm assuming its because it is not a "universal app". My question is what happens to all my awesome WP8.1 apps when W10Mobile comes out? Will those apps disappear as well? Will Windows 10 Store have different apps on Phone and Desktop? I know they are trying to be "universal", but will developers have the option to keep apps strictly Desktop or Phone?