Dear sir
adding "What's New" section at the beginning of the reference or in a separate pdf file will make it much easier to know new additions to octave in different releases. Matlab provide a list of the detailed additions with every minor and major release [refer to Matlab pdf Documentation to see that in detail:
http://www.mathworks.com/help/matlab/release-notes.html ]. worm thanks to octave team everywhere. thanks for you hard work.