Here is the full message from Tango Gameworks on the delay:
We’ve made the decision to delay the launch of Ghostwire: Tokyo to early 2022.
We want to get the game in your hands as soon as possible so you can experience the unforgettable version of a haunted Tokyo that we’ve been hard at work building. At the same time, we’re also focused on protecting the health of everyone at Tango. Our new release window will give us time to bring the world of Ghostwire to life as we’ve always envisioned it.
Thank you for being patient as we work to bring you an experience unlike anything else we’ve ever made. We can’t wait to show you more in the coming months.