Xbox 360 owners will be among the first to get a taste of Netflix's HD video streaming ability when the NXE is rolled out this November.
Source
Just in case you glossed over this massively huge tidbit when digesting the new dashboard information this morning, we're here to remind you that when the aforesaid dash hits on November 19th, with it will come HD Netflix streaming for (US-based, presumably) Xbox Live Gold members. You should know that this is only a "soft launch" with about 300 titles available for now, and the litany of details you're surely craving simply aren't available at present time.
Xbox 360 owners and Netflix subscribers can look forward to the HD content when the NXE comes in on November 19.Source