 The Bahrain, Barcelona and Baku rounds were postponed in response to the COVID-19 pandemic, while the Zandvoort and Monaco rounds was cancelled alongside the Dutch and Monaco Grands Prix.A revised calendar was published in June 2020, featuring two rounds at the Red Bull Ring and two at the Silverstone Circuit.The series will switch from conventional 13-inch wheel rims to larger 18-inch wheel rims to allow Formula One tyre supplier Pirelli to gather data on how the larger tyres would work ahead of Formula One's adoption of 18-inch wheels in 2022.