A same playable demo has been released on the XBox Live Marketplace that was released on PlayStation Network. This demo for PSN and XBox Live Marketplace contains tutorials for shooting, tekking and defensive moves. After the tutorials are completed, player can then have an access to another mini game as well.
Unfortunately, you can't download NHL 09 demo for PC. You have to buy its full version to play it on your PC. You can't play its demo on Windows. It might not be available in the near times as well. Rest everything is on developers. If they ever plans to release a demo play for the NHL 09 PC version, I will notify you. You just stay connected with this blog.