Max 8 for november 2017 is plausible, tho you can't be ever sure about things like that, and the recent acquisition by Ableton could mean it is not the priority right now ; it could also mean a Max 8 sooner or more surprising than expected. No chance that buying max 7 now will include free upgrade to Max 8, else it would be announced in advance i think.

right. I will just skip the current 25% offer and be patient :)

Well depending on your current needs, it might be wiser to buy today and buy the crossgrade later :) unless you don't need max in a short term of course.