When does Get Smart return?

Get Smart is an American comedy television series parodying the secret agent genre that had become widely popular in the first half of the 1960s. It was created by Mel Brooks and Buck Henry, and had its television premiere on NBC on September 18, 1965. The show generated a number of popular catchphrases during its run, including "sorry about that, Chief", "...and loving it", "missed it by that much", and "would you believe..." The Museum of Broadcast Communications found the show notable for "broadening the parameters for the presentation of comedy on television".
The series centers on bumbling secret agent Maxwell Smart (Adams), aka Agent 86, and his unnamed female partner, Agent 99 (Feldon) The enemies, world-takeover plots, and gadgets seen in Get Smart were a parody of the James Bond film franchise.