Windows Phone 7 Has been officially finished and released to manufacturing by Microsoft.

Microsoft’s hardware and carrier partners have received the final build and code so that they can integrate their own software and services before devices are shipped later this year. There have however, been several last minute changes to the platform:

Windows Phone 7 has to be the most thoroughly tested mobile platform to come out of Redmond. Microsoft say that they had nearly 10,000 devices running daily automated tests, 0.5 million hours of active self-hosting use, over 3.5 million hours of stress test passes and a whopping 8.5 million hours of fully automated test passes. Added to all that Microsoft have had thousands of early adopters and independent software vendors testing WP7 and giving feedback.

Microsoft’s Corporate Vice President of Windows Phone engineering, Terry Myerson said:

"We are ready. This has been one of the most incredible product development efforts I?ve ever been a part of. Today?s milestone is exciting not just because of what we?ll deliver to customers later this year, but how it sets us up for success over the long term in the mobile space? we?re really just getting started."

Windows Phone 7 is expected to drop in October for Europe and November for the US.