It's been speculated for a while that Arrow's Colton Haynes would return to reprise his role as Roy Harper/Arsenal at some point in the show's fifth season. Now, it seems as though that appearance will come pretty early.

At present, Arrow is still shooting the third episode of Season Five, titled "A Matter of Trust," and series regular Echo Kellum, who recently promised fans that they'll get to see his Mr. Terrific during the show's fifth season, posted some images to Snapchat of himself henging out with Haynes.

Haynes is not, as far as we can tell, in wardrobe for Arrow, so it's possible he's simply in Vancouver and stopped to visit his former castmates -- but it's equally likely that his anticipated guest appearance is happening now.

Unless they do exterior filming and Haynes gets spotted by fans or paparazzi, it's likely we won't know for sure which episode he's appearing in until the season's premiere date gets closer.