Starbucks has released its myStarbucks iPhone application in the Canadian and UK App Stores. Previously released only in the U.S. myStarbucks allows iPhone and iPod touch users to locate nearby Starbucks stores, browse the menu and create and share their favorite Starbucks beverages. The original U.S. version of the application has also been updated to provide more detailed information on Canadian and UK Starbucks locations for users travelling in…