After confirming they were going to be at E3, Ubisoft have since revoked that commitment, but have instead stated that they will be hosting another Ubisoft Forward event during that time.
As always here are the all local times:
AEST - 2:45am Tuesday June 13
ACST - 2:15am Tuesday June 13
AWST - 12:45am Tuesday June 13
NZST - 4:45am Tuesday June 13