So according to the account of the update dates in Five Nights at Fuzzboob's: Definitive Edition in month of August, everyone gets an update only on Thursday on Sunday, so at least we are waiting for 7 small updates (Thursday 8 15 22 and 29 on Sundays 11 18 and 25) and the big final update of the second part turns out to be 1 September on Sunday, I hope I got it right and calculated it.