According to
this listing, on 4 October 2023 Casterman will publish (in French of course)
The Castafiore Emerald as it originally appeared in
Tintin magazine, before it was adapted into album format.
Compared with other stories, there are very few differences between the magazine and album versions. The official Tintin website (again, in French) recently did
a comparison of many of the altered panels. Most are just changes to backgrounds or colours. Still, I believe this is the first time this version will be published since the original magazine.
It
was scheduled to be published in volume 12 of
Hergé: Le Feuilleton intégral. But it has appeared for a while that the remaining seven volumes of that series will never be published, either because of the death of one of the editors (Jean-Marie Embs) or because of the tension between Casterman and Moulinsart. I wonder if the decision to publish the magazine version of
Castafiore as a standalone book confirms that.
I also wonder if they'll now do the same with the other magazine versions that have never been republished. One is
Black Gold (the colour magazine version, as distinct from the black and white version and the two versions of the colour album). The others I believe are
Tibet,
714, and
Picaros (all three of which are very close to the album).