Apple ipod

IPhone OS 4.0? is a new iPhone or software?

I'm really excited about something new that Apple releases, but I am wrong about this new iPhone OS 4 will be a new phone or just a software update? Thank you for answering my question.

OS 4.0 is a software update Mainly 3G will be released later this summer.

iPhone 4G 4.0 OS NEW Software Update Official Apple Advert Preview