If it was a really big scoop, he wouldn't wait to announce it. He'd reveal it as fast as possible to ensure no one else would beat him to it.
My guess that it's something that is actually very small, but plays to the fans emotions and thus gets exaggerated into a bigger thing than it already is. Something like Markov having swelling in the knee again and is done for the season.
The two things that he's always been accurate about is locker room drama and Markov. Cammalleri was his locker room contact so it'll definitely be Markov related. Maybe Markov never actually had arthroscopic surgery? Maybe it was something more serious?