When does Dora and Friends: Into the City! return?

The sequel to the original Dora the Explorer series premiered on Nickelodeon on August 18, 2014 and ended on February 5, 2017 in the United States. The Spanish curriculum on Dora and Friends has been expanded to using Spanish in addition to English. The series had a few guest stars such as Megan Hilty and Christina Milian.