http://gematsu.com/2016/06/ubisoft-announces-e3-2016-lineup
They confirmed that Watch Dogs 2 will be there. The other known games are:
Eagle Flight (VR)
For Honor (XB1, PS4 and PC)
Ghost Recon Wildlands (XB1, PS4 and PC)
South Park: The Fractured But Whole (XB1, PS4 and PC)
They will probably reveal a new IP during their conference.
They confirmed that Watch Dogs 2 will be there. The other known games are:
Eagle Flight (VR)
For Honor (XB1, PS4 and PC)
Ghost Recon Wildlands (XB1, PS4 and PC)
South Park: The Fractured But Whole (XB1, PS4 and PC)
They will probably reveal a new IP during their conference.