This time the preliminary stage will be held over just 3 days, with the players playing each other once in 11 rounds of 15-minute + 10-second increment rapid chess. The bottom 4 will be eliminated, while the remaining 8 players go forward to the quarterfinals.
The quarterfinals, semi-finals and final will all be best of 3 mini-matches (the first player to win 2 mini-matches wins), where each mini-match consists of four 15+10 rapid games. If a mini-match ends 2:2 a single Armageddon game will be played: White has 5 minutes to Black’s 4 but Black wins if the game ends in a draw.
You can find the full regulations here (PDF).