Thank you Bjørn, I appreciate your answer.
How to try it ? Software seems to only be available as a paid software, so I don't see any way to try it?
Also, does it as feature listed on this thread ? I can see the change log but not really easy to understand if software have request feature from the thread.
On Windows version, I can see that the gridsquare is populated form user gridsquare and not from the summit gridsquare in case of S2S.

However, software is just so beautiful, it is good to bring this in the ham world!