Today at 8AM PST (UTC-8), the IE team announced the delivery date of the final version (RTW) of IE9: March 14, 2011. It's been a little over a year since IE9 Platform Preview 1 became available at MIX10. One year from announcement to RTW, with new platform previews every 6-7 weeks in between.
In the video below, Dean Hachamovitch and Ryan Gavin talks about the upcoming milestone:
Dean Hachamovitch, the head of IE, is going to be doing the Day 1 keynote at the Mix'11 conference in mid-April, the Softies announced today.