Mind that the amount of QA you ought to have heavily depends on what game you're making - e.g. with a story heavy game, you 100% want give or take 3 weeks on every update for localization checks, or for a MMO you probably want to run new clients/servers with your testers first for about a week to make sure nothing catastrophic happens, which is especially important in online games(lots of bad PR and real money invested by players - you really don't want to have to roll back "saves").
All depends on budget and quantity of course, but this is what's usually planned for from my personal experience working in that sector.
All depends on budget and quantity of course, but this is what's usually planned for from my personal experience working in that sector.