Newsmax just announced this. And here's a Detroit Free Press article.
No idea what this means in terms of the overall certification as it is 2 out of 4 votes on certification.
"On Tuesday, the two Republican members of the Wayne County Board of Canvassers cast an unprecedented vote against certifying the county's November election results for the county's 43 jurisdictions, including Detroit, Michigan's largest voting jurisdiction."
It goes to the state level now.