In the manual, under 'upgrading & new features' you can the changes from 'A6 to A7' and from 'A7 to A8', besides specific patch notes.
I also found the 'forcecast' in the manual but it could be outdated:
http://manual.3dgamestudio.net/forecast.htmAtm engine dev. does not seem to go forward, but that could change perhaps. I thought JCL said not so long ago that now(/then) he had more time for it. Don't get your hopes up though.
