Windows 8 To Get An App Store?

"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."

This is an interesting article from Ars Technica about the leaked slides detailing what will be in Windows 8.  It appears that Microsoft plan to get on the app store bandwagon again for their main desktop OS and include a new Windows Store with the next version. This is surprising considering the failure of their last venture, Digital Locker, which was closed down last year.  With the success of the Apple app store, and the Android Market, you can see why Microsoft are revisiting this and time will tell if it will be a success this time around.  Also in the article is news that IE9 is expected to get a beta release in August which containsa new rendering engine as well as other features.  Do you think an app store can work for your main desktop OS or is it really just suitable for the mobile market?