Stream keynote presentation from iPad to Apple TV

I had made a presentation in the Keynote app on my iPad 2nd generation. Can I stream the keynote presentation through AirPlay to my Apple TV? The iPad is running iOS 4.3.With video mirroring feature, you can do that using HDMI or VGA adapter to connect to your HDTV. If iOS 5 comes out, you are able to wirelessly mirror using Apple TV and Airplay.