http://www.dslreports.com/shownews/Netflix-Starts-Offering-Super-HD-and-3D-Streams-122670
Only to select ISPs though. The ISP essentially has to have a dedicated Netflix connection.
According to Netflix, Super HD streams need at least 5 Mbps of bandwidth, though the highest quality is obtained at 7 Mbps. The company isn't offering technical specifics on how exactly these streams surpass 1080p. 3D streams need at least 6 Mbps of bandwidth, with the highest quality needing 12 Mbps.
Only to select ISPs though. The ISP essentially has to have a dedicated Netflix connection.