Microsoft announced Windows Phone 7 is ready and released to manufacturing. Now its up to all of the company's partners to integrate the RTM version successfully with their upcoming devices.

As Microsoft reminds us, there is still a lot of work to be done before we see a device running Windows Phone 7 on the market. Microsoft partners, which have been working on the OS integration for quite some time, are now going to update them with the RTM version and continue the process until everything works like a charm.

"Today is the day that the Windows Phone team has been driving towards, and we are very excited to say that we’ve reached the biggest milestone for our internal team  the release to manufacturing (RTM) of Windows Phone 7!  While the final integration of Windows Phone 7 with our partners hardware, software, and networks is underway, the work of our internal engineering team is largely complete. 

Windows Phone 7 is the most thoroughly tested mobile platform Microsoft has ever released.  We had nearly ten thousand devices running automated tests daily, over a half million hours of active self-hosting use, over three and a half million hours of stress test passes, and eight and a half million hours of fully automated test passes.  We’ve had thousands of independent software vendors and early adopters testing our software and giving us great feedback. We are ready." From the Windows Phone Blog.