The IPTV features, according to the statement, are part of the Microsoft Mediaroom services and will be made available to service providers by the end of this year, adding that it will be up to them to decide when the service is deployed. We've posted Microsoft's complete statement after the break.
"Internet Protocol Television (IPTV) features will only be available from the Xbox 360 through a service provider who has deployed Xbox 360 with Microsoft Mediaroom (IPTV) services. This was an isolated incident where these features were inadvertently exposed while the customer's console was being serviced and is unrelated to the Fall Update. Xbox 360 with Microsoft Mediaroom (IPTV), will be available to service providers by the end of the year. Microsoft's IPTV service providers will ultimately determine the timing of Xbox 360 with Microsoft Mediaroom deployments."