I'm wondering now about how much Influence the new Design and the new Canon Stuff from Discovery has on TOS and 24th Century Trek Novels and Comics.
Especially the visual Depiction of Things in the Comics. Will the Comic Artists still use the Visuals from the earlier Shows for Things shown in Discovery or use the Design from that Show, as it is the newest Word on Canon?
When Saavik was recast in the movies, DC Comics kept their original Kirstie Alley-like character design for Saavik, but some later comics went for a more ambiguous look. I think different novel covers depicting Saavik have interpreted her in various ways, depending on individual editorial and artist preferences.
When ST:TMP changed the Klingons' appearance, Roddenberry suggested to fans that they should pretend the Klingons had always had ridges, but this was never a mandated policy. Some comics and novel covers defaulted to a ridged appearance, while others -- generally in later years -- kept using smooth-headed Klingons, at least in the 5-year mission setting. DC showed a ridged Koloth and Kor in its opening issues and a TOS-style Koloth in a later annual.
"Canon" does not mean every last detail. It means the overall body of works considered collectively, the general set of events that are presumed to have happened. As long as tie-ins stay consistent with those events, Paramount/CBS has never been too strict about how their depiction should
look. Heck, Tom Sutton in DC's first comic drew the
Enterprise interiors and technology in a way that bore utterly no resemblance to anything onscreen.
Heck, the attitude to canon itself has always been that new designers are free to reinvent the look of aliens, planets, technology, uniforms, etc. Each TV or film series has had its own version of phasers and communicators, of Klingons and Romulans and Andorians, of what cities on Vulcan or Qo'noS or Earth look like, etc. There's never been any rigid "you have to match the old look exactly" policy in canon, so why should there be in tie-ins?
My guess would be that comics, games, etc. set in the TOS era will stick to the TOS look overall, because that's what audiences for such things are nostalgic for, but things more connected to DSC will use its style. Or we might see a hybridization of the two gradually settling in.