As a movie title, Jurassic World Rebirth is clunky in itself. You don't know whether a colon or a semi-colon is grammatically correct, or nothing at all—it's just hard to read. Universal Pictures presumably kept the base name to provide some continuity to previous films, except Rebirth is a completely new chapter in the franchise. The plot takes place five years into the future, after all. Not only that, but the implication of Rebirth means starting something new. Thus, it would be appropriate for Universal to drop the Jurassic World portion. Besides, the main narrative hasn't gone back to either of the islands in years. Since Nublar engulfed itself in volcanic magma, the plot has transitioned to the mainland.
The accompanying title isn't the only reason that Jurassic World is no longer fitting for the series of films. David Koepp, the writer who penned the script for the original Jurassic Park is back. Universal recruited Koepp for the upcoming installment, giving yet another reason why the next movie is a Jurassic Park movie. Koepp's attachment doesn't mean this is a fourth entry, but if the influence he had on the original is present in Rebirth, it'll be difficult to argue such a point of view.
A title change might not mean much at first glance, but to fans who grew up with Steven Spielberg's version—complete with animatronics and state-of-the-art special effects—hearing that Jurassic Park has returned might trigger more appeal. Now, one can argue that Jurassic Park is even less appropriate since the physical park is nonexistent. Of course, that point of view fails to see that the island Zora Bennett ventures to is the one that started it all.
The only reason Jurassic Park is relevant is because of the island in question. It birthed everything audiences got to see in the first film, so yes, a movie that treads so far back warrants a subheading that requires a bit of thought. And that's not new for blockbuster movies, either. Sometimes, titles can be vague, only making sense once viewers watch them. Dominion is a good example. Several other movies have used the word in their headlines before, but without context, its definition can be ambiguous.
Whether Universal backtracks on the title or not, reviews of the upcoming film will undoubtedly liken it to Jurassic Park more than recent installments. No matter how many new characters there are, new subplots being hashed out, or rogue antagonists to be concerned about, with the number of callbacks to the original film in Rebirth, it'll be difficult not to make comparisons. And with those analyses will come the revelation that this movie is Jurassic Park 4—not a fourth installment in the Jurassic World series.
Jurassic World: Rebirth opens in theaters on July 2, 2025.