In fact, it sounds like the Detroit concept will look more or less like the Frankfurt concept, just with low-mounted hydrogen fuel cells instead of battery packs.
That said, Audi didn't come right out and tell Autocar that the Q6 H-Tron was coming to Detroit. Instead, a company spokesman told the website that "a concept car with new drive technology" will be shown at next month's show. But this seems like a safe bet. As Audi continues to cope with the fallout of its diesel emissions scandal, shifting focus to an even more alternative fuel source would be a sound strategy, even if it is just a PR move.
Whatever Audi ends up showing in Detroit, we'll be live at the show to report on all of it. Look for more in mid January.