Following concerns that Windows Phone 7 wouldn’t have enough titles support to satisfy the new wave of app-hungry smartphone users, Microsoft confirmed Monday that developer support has exceeded expectations. In a post on The Windows Phone Developer Blog, Microsoft’s Todd Brix announced that the Windows Marketplace for Mobile is now home to approximately 2,000 apps and games compatible with Windows Phone 7 devices. The figure is nearly double the company’s target, which was set last month. Microsoft also announced that the Marketplace is fully open to app submissions, and that it currently has 13,000 registered Windows Phone 7 developers. Windows Phone 7, which launched Monday in the U.S., is Microsoft’s attempt to reclaim consumer interest in its smartphones. Continued developer support is one of several keys to the success of the platform, and Microsoft certainly has an uphill battle ahead of it considering the massive app war chests held by Apple and Google.