If you are speaking of the link I included, it seems to be speaking more about what will happen in the future. Meaning, they don't specify what episode.
For myself, I've found this series to have picked up in intensity/characterization since its humble (hated) beginnings...but now i am beginning to feel that the characters are TOO touchy-feely with each other, imho. Is it just me, or now is every episode about how much the characters care about each other? It is starting to feel like a soap-opera or something.
Arrow, meanwhile; THAT is a series that is ramping up its quality lately! Season 2 was a very slow start, after a first season that kicked butt, but now is catching up and firing on all cylinders. It also has no problem inviting major DC characters into the fold.