Look, guys. It’s not big secret anymore — iPhone OS 4.0 is here and ready to rock. We’ve loaded up one of our iPhone 3GS units with the new beta OS and screenshotted it for you. It’s available currently, again in beta form, to all paid Apple iPhone developers and will be released publicly this summer (with the new iPhone hardware, presumably). So don’t waste time here, check out our awesome iPhone OS 4.0 gallery! We’ll keep updating this as we go along…

Click on over to our iPhone OS 4.0 screenshot gallery!