It’s a stand-alone endurance series run by SRO, one of the Rounds for the Blancpain GT series is shared with the IGTC series (Spa 24 hour)Great news! I love the fact that they are releasing a full racing series instead of a new car or a new track here and there... I'm not familiar with the intercontinental GT series, but the choice of tracks is great, even if these are very challenging layouts. Suzuka, Bathurst, Laguna Seca... I better practice my driving!!
This is very, very exciting news!
Full list here: https://www.intercontinentalgtchallenge.com/calendar