Here's some good news for those of you in Bulgaria, Iceland and a handful of other countries: the Windows Phone Marketplace has just arrived at your doorstep. Microsoft heralded its arrival in a blog post today, enumerating a grand total of 13 new markets: Bulgaria, Costa Rica, Croatia, Estonia, Iceland, Latvia, Lithuania, Romania, Slovakia, Slovenia, Turkey, Ukraine, and Venezuela. Today's announcement comes just a few months after the Marketplace launched in Argentina, China, Indonesia, Malaysia, Peru and the Philippines, expanding Windows Phone's global coverage to a total of 54 countries. If you live in one of these newly minted markets, you can find out how to configure your handset at the links below. Some developers may be befuddled as to why the App Hub hasn't been expanding as fast as the Marketplace, but according to Microsoft's Todd Brix, the delay can largely be attributed to regulatory red tape. Fortunately, though, the company's global publisher program will allow devs to create apps for countries where the Marketplace isn't yet available. For more details, check out the coverage links below.