Ars Technica have a news article which mentions a Windows 8 App Store is in the works, as well as the IE9 Beta arriving in August:
http://arstechnica.com/microsoft/ne...-app-store-for-windows-ie9-beta-in-august.ars
You can read the full article here:A set of slides distributed to Microsoft's PC partners in April of this year has been leaked onto the Internet. The slides outline Microsoft's vision for Windows 8's hardware ecosystem: the form factors the software giant will be targeting, the hardware capabilities that will be offered, and the demands that these parameters will place on OEMs.
A new "Windows Store" is perhaps the most ambitious feature described. Microsoft would offer a store service to third-party software developers. The store would allow easy discoverability of applications both from within Windows and from the Web. The store would handle standard features like account management and software updates, as well as providing capabilities such as the ability to replicate applications and settings across different devices. The store would be curated, so only applications that reached a certain quality standard would be permitted. The basic model, then, is a cross between Apple's App Store and Valve's Steam.
http://arstechnica.com/microsoft/ne...-app-store-for-windows-ie9-beta-in-august.ars