Riverdale is doing a time jump in Season 5

TVLine

The CW drama will kick off Season 5 with the three episodes that were intended for the end of Season 4 before the coronavirus shutdown, including the prom and graduation episodes. Afterwards, Riverdale will do a time jump. “So what we’re doing is picking up right where we left off for the first three episodes, and then doing a time jump… after those three episodes," says showrunner Roberto Aguirre-Sacasa, without specifying how long the time jump will be.