Those who don't have a developer account with the UDID registered will, yes. Those who DO have their UDID registered can just update to beta 2, which...
I assume (ok, i HOPE) they will add the quick reply and other actionable notifications in later betas. I can't see them putting it in OSX where it's...
Can't you just get it by clicking on your iPhone's serial number in iTunes when it's connected? That's how I got mine (that also automatically copies...