Two different sets of dates, one for Europe and one for the U.S, have leaked in regards to Microsoft’s Windows Phone 7 launch. The dates are, of course, unconfirmed.

First, Neowin said that it has been told by “sources familiar with Microsoft’s plans” that the company will hold several launch events globally on October 21 to introduce its Windows Phone 7 handsets. Devices will hit retail shelves that same day in the U.K., France, Germany Italy and Spain, the site said. Neowin was unable to confirm a U.S. launch date.