Microsoft announced today that its upcoming smartphone platform has is said to be Redmond's "most thoroughly tested mobile platform." It had nearly 10,000 devices running automated tests daily, over 500,000 hours of active self-hosting use, more than 3.5 million hours of stress tests, and 8.5 million hours of fully automated tests. WP7 was also used by thousands of independent vendors and early adopters. "We are ready," said Microsoft. We're not sure how that compares to others, but it sounds impressive nonetheless.