The statements "Canon made it pretty clear" and "via the rumor mill" cannot be simultaneously true. Big companies like Canon rarely issue clear statements that they *won't* do something. It would be unwise for them to limit their future options if market conditions change.
Do a search on canonrumors.com for "7D Mark III". The latest three postings in chronological order are:
"EOS 7D Mark II Coming in March 2018 [CR1]" - November 24, 2017
"Canon EOS 7D Mark III to Have Slight Crop in 4K [CR2]" - January 3, 2018
"We're Not Convinced an EOS 7D Mark III is Coming in 2018" - January 11, 2018
The last article certainly pours cold water on it, but it doesn't state that it's never coming. It talks more about "unfocused chatter" and speculates that "the earliest it would be coming is Q4 of 2018". Reading that in January 2018, it's far from "pretty clear... that there would be no 7D Mark III".
I'm not saying that this site is the be-all and end-all of Canon rumors, but IMO this is the best among the ones I've found.
Michael, I deeply regret if you were offended by something in my response to Fletchahh's posting, compelling you to respond in that way. Rereading my original response, I feel I was courteous and respectful to
@Fletchahh. I acknowledged that I hoped he was right, but I also simply stated that I've lost faith.
I would love to be proven wrong!
Mike