What features and functions do you predict? YouTube demoted... but replaced with something else? What else?

Always a camera upgrade, as well as video. I'd guess much faster internet access - like noticeably faster. Some kind of cross device compatibility and file share? Perhaps being able to share content, video and other media just by being physically close or on same networks with other device owners.

I gotta be honest I hoped for NFC to bring additional conformity to the contactless arena, but I don't think it's going to happen.

NFC *could* be in. I saw a few images / chip rumours. At least I hope it is. Agree with Matt - there's a bigger screen, so expect a camera and video upgrade...just not sure if there will be a big announcement around the YouTube demotion. Can't see it to be honest.