They showed this at the end of Arrow last night! I was trying to ID all the heroes and think I saw Stargirl, one of the Hawk's helmets, possibly the red headed girl that was Red Tornado in the JSA a few years ago. Loved seeing John Wesley Shipp in his Flash costume! Can't wait to see Superman again!
yep, that's the stinger that's at the end of all the shows (Supergirl on Sun, Arrow last night, and Flash tonight).
Stargirl, Huntress, Firestorm, Captain Cold, both Hawks (helmets) are there, Ray's helmet, Green Arrow. and a couple more that were too dark to see.. it seems to be the TV versions we've seen on Smallville, Lois & Clark, etc. . the early DC TV shows.