For baseball fans, there's no happier day than Super Bowl Sunday, since we know that means that in a few weeks catchers and pitchers will be reporting for early Spring Training. Well, the pitchers and catchers are warming up and now another sign of spring has appeared -- news about pricing of Major League Baseball's MLB At Bat 12 app for iPad and iPhone for MLB TV subscribers. If you subscribed to MLB TV in the past or plan on subscribing to a year full of baseball games, you're in luck -- MLB At Bat '12 will be available for free. That's a nice little bonus, since the MLB TV subscription plan costs US$124.99 for the 2,430 game baseball season ($119.99 if you subscribed last year). In the past, subscribers had to pay for the iPad and