No specific info about version 5.1. Please visit the main page of Ham Radio Deluxe on Software Informer.
I used it for a while before and found it excellent, especially being able to connect with a range of radios plus with the multi-function applications this program can handle it's probably the best any HAM could expect to use. Thank You.
One of the Best Data/SSTV free Programs you can have for amateur Radio the new V5.0 Beta is hard to beat