IE9 beta release date is supposed to be 15 September 2010 - just two days away according to
http://en.wikipedia.org/wiki/Internet_Explorer_9

It's a pity that WIN XP will not support it as XP will still be used by many users.

I will probably download the beta as I did for IE8. I found that IE8 beta had a lot of problems that were ironed out in the final release so perhaps IE9 will be the same.