Microsoft announces Windows Phone 8 SDK preview program, Windows Phone Store to replace Marketplace

While Microsoft's freshest Mobile OS is still a few weeks away from its big debut, versions of its SDK have begun to crop up online. The peeps over at WPCentral have snagged build 9900 of the software and are offering up a video tour of the reasonably-finished setup. It's not clear if this is a fully-loaded edition or if we're going to see a few more surprises if / when it launches next month, but if you'd care to see for yourself, check out the video after the break.