I have that same feeling that iOS 6 isn't as big an update as iOS 4 and 5 were. I was hoping for some cool new features and maybe a little redesign. I was looking for something that could convince me to make the switch to iOS, but it didn't happen. Facebook & Twitter integration has been on Android for ages, and the new maps update isn't magical. Passbook seems like the coolest iOS 6 feature, but it's not enough to switch.
With the Jellybean announcement, I'm definitely staying on Android.
Same feeling here. With Jelly Bean and WP8 I think iOS has lost its edge.
Maps seem worse than Google or Bing from whats been shown and what people have said.
Passbook is beaten by Wallet on WP8 from what was shown (My opinion is that all are a gimmick for the time being until companies get on track).
Facebook integration. Well we know thats been on the other OS's for ages and Im not a huge user of FB/Twitter anyways.
Siri looks like its been beat by Google Now for what Id use it for if I would ever use any of it. I dont see it as a feature that would sway me.
I have an upgrade ready right now but Im holding off for the next iPhone, WP8 and Jelly Bean phones. All the OS's look good enough for me at this point, but Im leaning toward WP8 so I can go all in with XBOX, Win8, WP8 and try that out since Ive done Android and iOS already.