Sooooo are they planning to develop part 2 of Echo?
Yeah, it's called Arches. The prequel is called The Smoke Room. Both aren't finished yet.
what about route 65 is it before or after Smoke Room
Route 65 is short prequel to Echo that gives a bit more background to what happened to the group. The route you choose in 65 is supposed to lead in to your choice of person to follow in Echo.