I didn't mean to imply anything like that. Just that its pure conjecture on the reps part. While its a plausible answer, there is no way to say that is the definitive reason. I think there is a much more straightforward reason why it's being "delayed" (no official release date that I have ever been aware of). They want to release it to great fanfare.
Carplay has been talked about since 2013 when apple was calling it "iOS in the car" @ WWDC before it was officially rebranded as "Carplay" around March/April of 2014 @ the Geneva Auto Show, if I'm not mistaken.
Carplay is intended for the Apple masses. It is meant to basically integrate iOS into another facet of your regular average consumers life. If I am cynical about the reason for this move I would say on some level it is intended to prevent people in the iOS ecosystem from easily moving to Android. We are talking about the soccer moms, grandparents, and less tech savy people.
I think after flops like aTV and Apple Maps, they are going to want to have Carplay ready for primetime because they have seen that no matter how large their influence and how devout their following is they can still fail miserably. The best way to do that is to hold off until it is fully polished and ready for consumer use (or as much as it can be). Not rush it to market because a third party released a handful of devices that promise functionality. I mean why hasn't Alpine/JVC/Kenwood even announced a line of Carplay stuff. Sure they have said they will make them but they haven't shown any hardware yet. No reason to rush if Apple isn't even ready to release it into the wild.
Go around to other forums and see what people are anticipating from Apple. Ask someone on the street what they are most excited to hear about at the September media event. They are going to say iPhone 6, maybe even iOS 8.
Carplay won't be on the average persons radar.
The whole world will be watching the September event waiting for the announcement of the iPhone 6 and iOS 8. It just seems to keep with apples M.O. to release big things like this on the biggest stage possible, not just push it out into the world and let people stumble upon it.
Apple is in no rush to release Carplay (just look at how long its been in the works). They want to infrastructure to be there so it forces people to use it and love it. Us pioneer NEX users, as I have said in other threads, are a tiny minority. If Carplay gets a mention at the event, which I fully expect it will, there will be a handful of 3rd party app developers on hand to talk about their apps integration into Carplay. Many others will be mentioned as "carplay ready". I would also expect a handful of automakers to be on hand at the event as well who might even talk about how they are building Carplay into their newest lineups, but that could be a stretch.
I don't mean to be negative, I'm just tired of seeing "explanations" and "reasons" for delay on the forums here. Especially when they go against the Apple ethos. All of us on the forum should be old enough to drive, we should be old enough to delay gratification. But I guess that goes against our human nature, especially us American's.