There isn’t a whole lot to back this up, but Smartphone Thoughts is reporting on a rumor that Sprint plans to release a Samsung cellphone (the i600 we presume) running Microsoft’s Smartphone operating system. We’d heard that Verizon was supposed to be the other carrier (besides AT&T Wireless) to offer a Smartphone in the US, so we’re not sure whether this could mean that they’re no longer planning to, or whether both Sprint and Verizon will carry Smartphones. Or it could just turn out to be an idle rumor.