Today, Microsoft have announced that Windows Phone 7 has officially been released to manufacturing.

This means that the build has been completed, and the final bits are being sent out to manufacturers (OEMs). From this point on, the work Microsoft has ahead of them is working with its partners to deliver the devices that will take the market by storm.

“The work that’s still to be done with our partners means we’re close, but we’re not quite there,” Greg Sullivan, a senior product manager in Microsoft’s Mobile Communication Group, told seattlepi.com. “This means that we are on track to launch Windows Phone 7 for the holidays, and we’re pretty stoked.”

According to the Windows Phone Blog, WP7 was very thoroughly tested; in fact, it was the most tested mobile platform Microsoft has ever released. The Windows Phone Blog reports that 10,000 devices were running automated tests daily, over half a million hours are recorded of active self-hosting use, over three and a half million hours of stress test passes were recorded, and eight and a half million hours of fully automated test passes were recorded as well. That’s not even mentioning feedback from early adopters, software vendors, and of course, reviewers.

As many have stated throughout Windows Phone 7′s development, the general sentiment is that WP7 is essentially “make-or-break” for Microsoft in the mobile sector.

Windows Phone 7 is slated for release in Europe come this October, and release in the United States come November.