Microsoft started inviting to a select group of VIP web developers, designers, bloggers and press to an event in San Francisco on Sep 15th to celebrate the Beauty of the Web and to mark the launch of the IE9 Beta. IE9 has over 2.5 million downloads of the platform previews.
"Invitees e-mail carries a link to a special HTML5 website. To RSVP, they've to complete a word puzzle by typing the letters shown on the screen. Once the puzzle is complete, the RSVP button appears (see pic) so they can RSVP for the event."
"Developers are already working hard on some amazing new web experiences enabled by Internet Explorer 9. On September 15th we'll be able to show you a more beautiful web that feels native on Windows," stated Microsoft