PV for the final ep is out:
http://www.youtube.com/watch?v=nhquixAeYbU
There are also preview pics on the official website.
The PV and the preview pics only show scenes from the rest of chapter 8, none from chapter 9. Can't wait to see Kirito and Asuna's reunion in the hospital room, I can tell from the previews that it's gonna be a great scene.