It depends on the person.
I consider myself a techno-geek and Apple fanboi. Me, I
need the new products as soon as I can get them and I do not mind positioning my leisure purchases solely around Apple release dates. I said it before and after the 4S reveal and I'll say it again: At this point in the game I have complete confidence in whatever Apple releases and expect a better'ed experience that always justifies the upgrade. I haven't been disappointed yet, and it is more of the same with the 4S.
Apple products are usually the only high-dollar electronics I want and I've pretty much resigned myself to owning every iteration of the iPhone and iPad. Maybe I'll start a museum.
It helps having the latest when you're in the mobile web/app industry as well.
I usually don't defend myself when this question is asked (it's asked plenty) but usually its easier to have women empathize once I point out the expensive and 'in-season' longchamp bags a lot of them use.