These delays are not a great start for Rift and Vive, hopefully it won't hurt VR too much, I've seen a lot of people complaining about having to wait a month or longer to get their VR. I always thought with how late pre-orders went up, they might have some problems.
i think Sony made a good choice to get pre-orders up now but delay until October, to give them enough time to make more units for launch, or they might have seen similar problems.
Not that problems couldn't happen with PS-VR but 6 months from pre-order to launch is much safer than 2 months.