I have received notices that Lightroom 4.1 is available. When I look at my version of Lightroom 4 I see that it is version 4.1RC. What does RC mean? And should I install the 4.1 upgrade or do I already have it? I'm on a Mac if that matters (and I doubt it does). Thanks. Lea your kids . my camera . we'll click www.leamurphy.com
