The new Grand Thefty Auto 6 trailer starts with a throwaway line that I didn't think anything of until Rich pointed out that it's clearly a joke.
"Oh, just fixin' some leaks," protagonist Jason says as he climbs down from a roof in the very first scene, and Rockstar is a meticulous sort, so I have to imagine that this is an intentional reference to the many leaks GTA 6 has seen over its long development.