Version 2.1 is our new flagship calculator, and is recommended for use in player projections. It is very similar to the previous Version 2.0, but with some slight adjustments based on the 2012 MLB run environment and player market. You can check it out here.
Version 1.1.1 is our new super-simple calculator, and is recommended for use in learning about WAR. It, too, has been upgraded over its previous manifestation (Version 1.1) based on the 2012 season. You can check it out here.
Stay tuned for another major upgrade and the release of a WAR calculator for pitchers later this offseason!