The most recent version is now available for download. Oddly, on the CCLR rating list for all versions Komodo 10.1 is tied for first with Stockfish 8 at 3381. Komodo 10.2 is listed at 3374. Of course 8 points is pretty meaningless.
I was unable to locate anything describing exactly what the improvements are, but in individual match ups, Stockfish 8 has beaten Komodo 10.2 by a score of +7 -2 =24! Komodo 10.2 costs $60 and is reported to be about 22 Elo stronger than Komodo 10.1.