Tom Holland’s Spider-Man is one of the newest heroes in the MCU, only gaining his arachnid-like powers approximately half a year before the events of Captain America: Civil War.
Whether or not Holland’s wish is granted remains to be seen, but going off the available information, it sounds like we’ll be sticking with the MCU’s Peter at least until he graduates high school.
While the previous two Spider-Man movie series showed Peter Parker in high school, the Homecoming series is placing extra emphasis on Peter’s time as a teenager, both with his studies and by being the “new kid” in the world of crimefighting.
Holland has also expressed interest in the MCU showing his Peter going to college and still beating up bad guys well into adulthood, to the point that the actor is comfortable playing the character for another 20 years.