Samsung today announced that U.S. owners of the Galaxy S8 and S8+ smartphones can begin to test the voice powers of Bixby. Bixby is more than a simple voice assistant, as people can use it to interact with all facets of the phone's user interface. Samsung calls Bixby an intelligent interface, one that it hopes will help people interact with various types of technology and not just phones. Anyone who owns the Galaxy S8 or S8+ can register with Samsung to test the early preview of Bixby. According to Samsung, the number of testers will be limited. The sign-up is available from Samsung's website. Bixby was originally intended to launch on the Galaxy phones when they went on sale earlier this year. Samsung was forced to delay Bixby, however, and has since said Bixby will arrive later this summer.