Time Warner Cable is reportedly launching the beta test today of a version of its TWC TV service for the company’s Internet-only customers in New York City. While the service plans to support a number of platforms, the current emphasis is on streaming via Roku’s set-top boxes (participants will receive a free Roku 3). In addition to Internet, a Starter TV package runs an additional $10 per month, while another option adds Showtime and Starz for $20 per month. Engadget notes, “for those who want all the usual channels but without a cable box, a Standard option with Showtime and Starz costs $50 per month.”