It looks as if Constantine's fire is almost out, sad to say, as the CW didn't announce they are picking up the series at the Upfronts.
In addition, CW president Mark Pedowitz stated it's just a rumor that Constantine was going to move over to the CW and insinuated it had as much of a chance as him playing in the NBA.
“At the moment, it’s just a rumor," Pedowitz said at a morning conference call. “There’s also a rumor going around that I was going to play for the NBA."
Constantine showrunner Daniel Cerone also is said to have deleted a tweet that read it's not looking good for Constantine at the CW.
Cerone has since updated with: "Tough morning. Feeling your disappointment. Touched by the continued enthusiasm."