I highly doubt that we will ever see the full show in 4K. I believe the only reason why 4K cameras used - 1 or 2 songs will be used as Samsung promotional videos. Also, this explains why they filming show in November, instead of 2015 NA tour. New Samsung 4K TVs will be presented later this year, so it makes sense.
Plus, i won't be so excited for the BluRay 'till we get the official confirmation. Mexico 2012 and Berlin 2012 both got DVD release only, which is kinda lame for 2010+ release.
So for now my guess will be:
720p stream
1080i cropped TV version sometime in next months
DVD release (i'm not even sure about the full show - even RTR was fucked up by 4 songs as bonuses)
So that's it. Basically, you get more detailed picture. The thing is, the difference can be seen on a huge TVs only (65"+).