No shock here, but it seems as if the Zune world as we know it has closed up for the day. The Zune homepage is currently displaying the banner shown above, while a good number of our tipsters and staffers have confirmed that signing into Zune Marketplace is impossible. Of course, it's not like a major new product (and software update, most probably) is slated to officially ship on September 15th or anything, so we'd say a little patience could go a long ways here.[Thanks to everyone who sent this in]Filed under: