Only 2500 players have access to the New World in the Beta realm.
Diamond and sapphire teams
To get first access, you have to be a member of one of the teams in the Beta (ask me about it). If you leave a team that is on the Beta, you lose the Beta access. If you join a team with Beta access, you get access to the New World Beta.
This is not an 'event'.
Ships, sailors, water.
Dispatch dragons to attack other continents and take them over (and name them). Carve out your team's realm.
Form alliances (if you dare) with other teams.
Fly your dragons over the waters in real time while your helpers attack alongside you.