Lightroom 4 has some really great new features and enhancements. Some of my favorites have to do with the new capabilities it brings to the adjustment brush. If you haven't had a chance to play with these I suggest to make some time to see what's new there.
I had the pleasure of writing an article on the new adjustment brush features for the April 2012 issue of Photoshop User Magazine. Photoshop User Magazine is from the good folks over at the National Association of Photoshop Professionals (NAPP) and is included as one of the many benefits of membership. It's also available at most major bookstores.
If you aren't already a NAPP member you should consider it. If you regularly purchase the magazine you've more than paid for a year of membership! And there's much more...discounts, free downloads, excellent training articles and videos, help desk features for members, personal portfolio pages, and a great forum to name a few. It's worth a look!
Click Here to download my article on the new brush features and enjoy!