out of Microsoft's MIX10 event so far today has been the unveiling of the significantly-retooled Windows Phone Marketplace that'll debut in Windows Phone 7 Series -- and needless to say, it's a looker. It's got support for credit card purchases, operator billing, and ad-supported content -- a hot topic right now with Google's and Apple's mobile advertising acquisitions -- and a try-before-you-buy scheme not unlike Android Market's policy (though WP7S devs can choose what kind of trial period they want to offer; Android devs have no such option). We've been offered some video of the new Marketplace in action, and it looks super polished and well-integrated with the typical WP7S way of getting around -- you're given a "panoramic view" where you can browse categories and titles, see featured items, and get details with ratings, reviews, screen shots, and pricing information. Purchased apps can be pinned to your Quick Launch screen, saving you a couple taps for your favorite and most frequently-used items. Watch the full video after the break -- and keep an eye out for the trick "tilting" of menu items based on finger location toward the end of the clip, something we haven't seen before.