During an interview with Esquire, Ehrenreich let slip he had signed up for three movies as the younger version of the character made famous by Harrison Ford. After being asked how many he has signed up for he replied “Three” before realising he may have just got himself into trouble with Lucasfilm, “I don’t know if that’s officially, uh, public. But—yeah.”
So for anyone thinking his outing may have been just a one-off, we can now expect him to develop the character further. Whether it will be in further spin-offs or sequels to Solo isn’t clear.