They havn't released one in a year in and half. I know the show sucks by todays standards, but its fun to have'em and watch them all.

I think their is another season after 'challenge' were other characters like green arrow, and the atom make an appearance. I almost positive because I'm sure thats how I got introduced to green arrow. Then after that was the galactic gaurdians show which was based off a toy line at the time.