See AirAsia.com or Yahoo news.
Update: I was just on the AirAsia website and saw that it might be 500,000 free seats… I cut/pasted a blurb from the site below.
Absolute Free Seats (No Fuel Surcharge)
With 500,000 free seats, thereâ€™s no reason not to go for a holiday!
Booking Period: 12 Nov 2008 – 16 Nov 2008
Travel Period: 22 Jun 2009 – 24 Oct 2009