Adobe Camera Raw has been updated to version 7.4 and Lightroom to version 4.4. This brings a number of changes of interest to Nikon users. First, default white balance handling has been changed for many pre D3 cameras (D40, D50, D80, D200, D2hs, D2x, D2xs). Second, support for the Nikon S1, J3, Coolpix A, and D7100 has been added, and preliminary support for the Coolpix P330 is available. Finally, there are some new lens profiles of significance, including one for the 70-200mm f/4 and for several recent third-party lenses.
There were lots of bug fixes in both releases, so you should definitely update if you use these products.