Maybe I came late but I saw him arriving with 2 argent peacekeepers. He came on hyppogryph, flying around 15 yards abowe ground, near that levitating monument before dalaran fountain. Classic "argent tournament challenge music" begins to play, and he said:
Arelas Brightstar says: The Argent Crusade invites you to test your skills in honorable combat against other heroes of Azeroth at the Argent Tournament.
Arelas Brightstar says: The champions of the world's great nations have gathered at the Argent Tournament Grounds in northeastern Icecrown to face all challengers.
And then flew away.