The point is that the batch quantities progressively get bigger, which means there will be lots of shipments in December, but not so many in October. Based on that, I am expecting late November or early December for mine.
It will be fun to read all the reviews and feedback from the various backers until then... the three musketeers have been knee-deep into chasing & identifying issues that it may be difficult for them to actually give us the impression the regular backer will have. It is sometimes said that some issues you cannot "un-see" when reviewing VR headsets in general, like pupil swim, and once you really concentrate on it it may be bugging you. The average backer may just unpack his unit and start to play with it, that may make them more immune to certain, hardly noticeable flaws. So I will be curious to read the average Joe reviews too when they come.