HTC on Tuesday debuted the new HTC One M8 for Windows smartphone, bringing an operating system option other than Android to the handset maker’s flagship phone. For now, the device is a Verizon Wireless exclusive and only available in the US. It’s available for either a promotional price of $100 with a two-year contract or $30 a month through the Verizon Edge financing plan. Customers can purchase the device online starting at noon Tuesday and at retail stores starting Wednesday.