Joystiq reports that the Virtua Fighter 5 demo is available on Xbox Live.

From Gamespot:
‘Although Virtua Fighter 5 has been available on the PlayStation 3 for some time now, the Xbox 360 version looks set to be the definitive version. Because the game is based around the latest version of hardware in the arcades, it’s the most up-to-date home port of the game and therefore features improved artificial intelligence. If that weren’t enough to convince hardcore VF players to buy the game again, the Xbox 360 version’s improved, anti-aliased graphics should tip the balance.’

The game will be available retail on October 30th.