Some new information about the movie. The title seems to be "The Sword of the Wizard King" and it's about a previous WK, presumably the one before Julius, named Conrad or Konrad. The movie will be released on Netflix on 2023.3.31.
I wasn't particularly interested in the movie at first, since these types of movies are usually non-canon and tend to follow the same formula. However, the fact that it's about a previous WK means that we might actually learn something new about the setting and the history of Clover kingdom. In particular, the fact that Conrad apparently didn't die in office and was simply replaced by Julius means that there could have been something weird going on behind the scenes. I highly doubt the movie would outright spoil the
Lucius reveal for the anime-only fans, but we might get some subtle hints about his involvement.
As for Conrad, his design is pretty cool and his clothing is very distinct. He almost looks like a pirate or something. He seems to be carrying a bunch of keys with him, which might play a role in his fighting style. Perhaps his magic is something related to locking and unlocking things, similar to Secre's sealing magic? I could also see a scenario in which each key allows him to somehow use a different type of magic, but I'm not sure how exactly that would work. Whatever the case may be, a Wizard King definitely deserves to have some very overpowered abilities, or at least something comparable to what Lumiere and Julius had.