You can watch "How to Train Your Dragon: The Hidden World" on various streaming platforms, including Amazon Prime Video, Google Play Movies, YouTube, and Apple TV. It may also be available on subscription services like Netflix or Hulu, depending on your region. Additionally, you can rent or purchase the movie from digital retailers such as Vudu. Check your local listings for availability, as offerings can vary by country and change over time.

Yes, "How to Train Your Dragon: The Hidden World" is the third installment in the "How to Train Your Dragon" series. Released in 2019, the film follows Hiccup and Toothless as they discover the hidden world of dragons while facing new challenges. The movie explores themes of friendship, growth, and the bond between humans and dragons. It serves as a conclusion to Hiccup's journey and is praised for its animation, storytelling, and emotional depth.

As of October 2023, there is no official announcement for a fourth "How to Train Your Dragon" movie. "How to Train Your Dragon: The Hidden World," released in 2019, is the third installment and concludes the main trilogy. While there have been discussions about potential spin-offs or related projects, nothing has been confirmed regarding a fourth film in the main series. Fans are encouraged to stay tuned for any future updates from DreamWorks Animation.

As of my last update in October 2023, "How to Train Your Dragon: The Hidden World" is not available on Netflix. The film is often available through other platforms like Amazon Prime Video, Hulu, or on rental services. Availability can vary by region, so it's best to check your local streaming services for the most current options.