Each DLC now has two Core Constructed main events, best of 3, and each player can only enter one. Main Event 1 runs Friday to Sunday, up to 4,096 players: 8 Swiss rounds on Friday (18 points to advance), 7 rounds on Saturday and a top 8 on Sunday, best of 5. The top 32 plus anyone on the same points earn a Championship invite.
Main Event 2 runs Saturday to Sunday, up to 1,280 players: 8 rounds on Saturday (18 points to advance) and 3 more on Sunday, with no top 8. Only the top 8 earn an invite and there is no gold Hades; the other prizes are the same up to top 16.
There is also an Infinity CCQ, Saturday to Sunday, up to 216 players (£50 in London), with an invite for the winner only. The ticket does not include venue access: it suits anyone who already has another, such as players who missed day 2 on Friday.
Source: Fanfinity (London DLC)