In the closing minutes of Season Three of Arrow, we saw Oliver and Felicity leaving Starling City. Oliver had given up the mantle of The Arrow and was leaving to be with Felicity. When Season Four starts, it looks like he'll be coming back with a fresh look. Stephen Amell took to Facebook and Twitter to reveal the new look minutes before the panel started at SDCC, he also tagged it "GreenArrow."
Amell would then come out on stage in costume and give an impassioned speech about the fans saving this city. I think the suit looks fantastic and I hope they can find the same magic they had in Season Two and make this show as great as it once was.