Yes you are correct, that was last year's game. The rules can be found here:
http://www.oregonfirst.org/wp/wp-upl...-2011.v2.1.pdf
BunnyBots is an amazing event that is created every year by team 1540. The current BunnyBot game has been released, and those rules are here:
http://www.team1540.org/bunnybots