Men's Rugby World Cup 2027 in Australia will feature 24 teams after the World Rugby Council approved historic reimagination of the competition format, window and timing. The new format will feature six pools of four teams, with a round of 16 added prior to the quarter-finals. This will enable the tournament window to be reduced from seven to six weeks, while promoting a rhythm that builds momentum across the pool phase and respects the same minimum number of rest days between matches as at Men's Rugby World Cup 2023.