NetDocuments released its 15.1 update in early February 2015. Go here for the full NetDocuments 15.1 Update Notes.
There were a number of significant enhancements in 15.1:
Advanced Search Redesigned
The Advanced Search module was redesigned and streamlined. The UI has been tightened considerably, making it an easier component to work with. Also, less used fields can be hidden, so as to simplify the searching process. When tabbing from field to field, lookup buttons are skipped and can be accessed by a more universal F2 function key. See the video below or the Advanced Search Help for more information.