When does 4400 return?

4400 (pronounced "forty-four hundred") is an American science fiction mystery drama television series. It premiered on October 25, 2021, on The CW and concluded on February 14, 2022. The series is a reboot of the 2004 television series The 4400.
Forty-four hundred people vanished without a trace over the last century. They make a sudden return, having not aged a day and with no memory of what happened to them.