This release has improved DROID performance. For very large files where approprate metadata can be extracted from the beginning of a file (certain types of video, for example), it is now possible to limit the number of bytes that the DROID tool examines. This is a new value in the fits.xml configuration file. More details here. By default, there is no change to file processing by DROID unless this value is either uncommented or added to an existing fits.xml file.
The class FitsOutput.java has a new method, getFitsVersion(), which provides the version of FITS that created the instance of this class.
There is a new version of the OTS JAR file which will be providing new functionality in a future release.