According to Forbes, it might not happen:https://www.forbes.com/sites/scottmendelson/2019/06/03/avengers-endgame-avatar-star-wars-force-awakens-james-cameron-disney-box-office/#316cb6ba879a
Looks like it lost steam just shy of its goal.
In slightly unrelated news, I am astounded by how much Avatar money made and how little pop cultural impact it had. The only time people ever speak of it is for sales numbers. It was truly just a graphics hype. I don't expect its sequels to come close to its numbers.