When I logged in today in the PF website I got a notification saying that they will change something in the conditions and that I have the option of “terminating my business” with them. Anybody knows if that would mean I can cancel my mortgage (lasting another 7 years)? That would be awesome as now the rates a lower. 
I’ve got the same message but I didn’t read the changes. Isn’t there somewhere a summary?
Funny thing is, I can’t find it anymore! I guess the answer to my question is anyway in my mortgage contract…
There is a summary (even in the before - after - change table fashion):
https://www.postfinance.ch/en/detail/amendments-general-terms-and-subscriber-conditions.html
Cannot contribute to the initial question though, but change seems to be more editorial than substantial. It may require a review by the legal person…