In a new survey conducted by Millennial Media of 500 publishers, developers and advertisers, nearly 20% are planning to focus their work on Windows Phone 7 in the next year. The iPhone garners 30% interest right now but Android is expected to close in that gap by hitting 29% next year.

To put into perspective, Windows Phone 7 achieving 20% interest seems to be a definitive sign that developers and publishers are taking it seriously, that they have confidence in the platform and that Microsoft is really throwing some weight behind it.

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We've already seen the app store hit 1,000 apps within the first three weeks, the Marketplace have 12,000 registered developers and quite a long list of major brands already available, all before the U.S. launch. While this survey has no guarantee for 100% accuracy in predicting the future, we're sure more happy than not at the results.

Source: Millennial Media; via: GigaOM