To me, it isn't a matter of being outdated.
It's more the lack of functionality in the core apps of iOS. Mail is the prime example of this. No attachments except for pics when iOS 6 rollsout, no easy way to navigate between accounts (the "All Mail" is only inboxes), no threaded messaging, and no true backlog of your mail (it saves only, what, up to 3-weeks worth? Versus Gmail on the Android which gives you virtually your entire mailbox).
There are other things that sorely need features and updating: keyboard, Safari, easier access to settings.
That's the real problem with iOS 6; not that it's outdated looking (I mean really, you weren't expecting Apple to make any major changes were you?), but more that their core apps just aren't getting better fast enough. Only now can we get attachments in emails, and only for photos? It's a joke.
If Android upgraded at this pace and iOs upgraded at Android's pace, the iOS fanatics would be all over Android's slowness to adopt and improve. But if Apple does it, it's tolerable. Apple fans allow them to get away with a lot, I notice. Same thing with hardware. People bash Samsung for putting out the slight variations of essentially the same phone, rehashing it, but generally have no problem with the 4S, or that if the rumors of the next gen iPhone are to be believed, have no problem with the ever so slight changes due to come (which may last for 2 years).