The company points to a recent Dev Center document emphasizing Windows 8's optional app receipt system, which can require any transaction be validated on the developer's server.

ENGADGET: Microsoft pins Windows Store app purchase exploits on insecure code

For example, now you can edit a document on the go with Windows Phone 8 and pick right up again on your PC when you get home.

ENGADGET: Microsoft brings guest user account to Windows Phone 8 via Kid's Corner

According to the the document, titled "The Microsoft Windows 7 Upgrade Program Rev. 2.1, " Vista machines purchased from participating vendors after July 1st will be eligible for an upgrade to the new OS, whenever it comes out -- in a similar manner to the XP - Vista switchover.

ENGADGET: Windows 7 upgrade details released?

It will allow Windows users to initiate a document print from their desktop that they can pick up at one of the copy shop chain's stores.

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