Now this is interesting! According to Deadline, the CW has been happy enough with the two Arrow episodes featuring Grant Gustin as Barry Allen that instead of a backdoor Flash pilot near the end of this season, they want to do a stand-alone pilot. (Via Flash TV News.) No word yet on what this means for the originally-planned 20th episode of the season.
Arrow episode 2.8, “The Scientist,” airs December 4.