iPhone 4 iOS 4 battery life

How is your iPhone 4 battery life under iOS 4.0.2? Since iPhone 4 launched we've gotten tons of email and tweets from readers surprised at just how much battery life they're getting out of iPhone 4, but iOS 4.0.2 seems to have raised that bar (even if only slightly).

I know my iPhone 3GS would be in the red by early evening, yet even pushing around four times as many pixels with that huge Retina Display, iPhone 4 seems to just go and go. Especially impressive is stand by, where I've left it off the charger overnight only to wake up and find the battery levels had barely budged.

What's your experience so far with iPhone 4 under iOS 4.0.2 battery life?