Viswanath and Sons OTT release date is not explicitly mentioned in the provided evidence. However, the article does mention that the Tamil film “Viswanath and Sons” starring Suriya and Mamitha Baiju is available on an OTT platform. The exact release date and platform are not specified in the evidence. The article only provides information on where to watch the film, but it does not provide a specific release date. It is recommended to check the official social media channels or the film’s official website for the most up-to-date information on the release date and platform. The article does not provide any further details on the release date, so it cannot be confirmed at this time.