https://www.gamespot.com/articles/gta-5-updates-detailed-for-this-season-heres-whats/1100-6453848/

Grand Theft Auto V players are about to get a bunch of new content to play with in GTA Online. Rockstar has announced many new additions are on their way in "the coming months," including new modes, vehicles, and the much-anticipated Transform Races.

Transform Races are the next evolution of Stunt Racing. You race in land, sea, and air vehicles across Los Santos' streets, waters, and skies. The races will feature "new and unique stunt tracks [that] will allow for transitions that run the gamut of vehicle types," so players can expect to race in supers and off-roaders, boats, jet skies, plans, helicopters, and even do some skydiving, all in the same race.