See Stephen Amell’s twitter
Whether that means Crisis will still happen is unknown. Whether that is a catalyst for the end of rest of the shows is also unknown.
A quick note from Eric (the admin). I've watched Arrow before Supergirl even was created so I've been a fan. I had the great privileged of meeting Stephen a few times and he is incredible, genuine and truly appreciates the fans. While I've built sites dedicated to the heroes that most interest me and my wife Kelsey, Arrow will be missed and if I had the time I would have created a site for Arrow as well.
This photo of Kelsey, Caity Lotz and Stephen basically sums up the Stephen I met perfectly, genuine and fun:
[attachment]stephen.jpg[/attachment]