Stephen Amell revealed his new Green Arrow costume at the Arrow panel, and WB released an official Green Arrow costume image as well (see above).
Comic-Con details for Season 4 of Arrow include:
• Batman character Anarky will appear
• Justice Society’s Mr. Terrific will debut during Season 4 where he will work with Felicity
• David Ramsey’s John Diggle gets his own costume
• Thea Queen will get the “Speedy” codename
“Arrow” Season 4 premiers Wednesday, October 7th.
— Marc Guggenheim (@mguggenheim) July 13, 2015
Arrow Comic-Con Highlight Reel: