Software giant Microsoft confirmed on Wednesday that its Windows Phone team accomplished the development on Windows Phone 7 and turned over the code to its hardware partners so that they could integrate the operating system with their devices.

Terry Myerson, corporate vice president at Windows Phone Engineering confirmed through a posting on The Windows Blog that Windows Phone 7 reached the release-to-manufacturing point.

Commenting on the move, he added, “Windows Phone 7 is the most thoroughly tested mobile platform Microsoft has ever released.”

The company claims that it had had the software tested on 10,000 phones daily. The operating system for mobile phones is expected to be competitive with Google’s Android and Apple’s iPhones.

Microsoft’s share in the operating system market has seen sharp decline due to cut-throat competition from Apple and Google. Company’s Windows Mobile 6.5 OS will remain as a “placeholder” for the company’s mobile market share until the release of Windows Phone 7.

As per Microsoft watcher Mary-Jo Foley’s claims, mobile phones running Windows Phone 7 operating system could be launched in October for Europe, while the US would get the phones in November.