Danielku15 Hi Daniel,
My feeling towards BS5 is not very good, as they are dropping support for Internet Explorer completely. There has been significant breaking changes with BS5 and the entire SA core structure will need to be rebuilt from the ground up.
I will be outlining all changes that I will make so everyone with good skills in code management should be able to follow my lead and update the changes on their end.
In terms of functionality and the soul of the template, nothing will change, we are only upgrading to BS5 without affecting anything else.
All my updates has always been free and will continue to be free.