It's a huge upgrade in many ways. Higher res, has a tilting touch screen, much better ISO capabilities, the buttons light up for when shooting in the dark! It's got wi-fi so you can control it via your smart phone or transfer images out in the field, it's faster [10fps] and has a huge buffer, 4K video, the ever popular joystic ... only you can say if you need it or want it enough to buy it though