Last week's leaked build didn't include a new app Store. But since the Store is just a Universal Windows Platform app, it could be introduced and updated separately rather easily, I'd assume.Windows Central has published a variety of sourced information on what the coming new Store experience will likely include. It could support the ability for developers to offer in-app purchases and to submit unpackaged Win32 apps. There are rumors that the new Microsoft Store app could offer mini app stores (like a Google store or an Amazon store) right inside the app. I'm hoping Microsoft sheds some light tomorrow on how it plans to support non-UWP apps in the Store. Officials have hinted that Microsoft was working on some sort of app certification/trust mechanism that would guarantee any apps users download from the Store or not would get the Microsoft seal of approval.