I tend to think that we were being trolled a bit. I think that the Dream footage was actually a snarky way to pay homage to the Sea of Thieves intro which mirrored the original intro to Dream. I think that Mr. Stamper just meant that if we wanted to see project Dream footage, we should watch the Sea of Thieves intro. The timing for me is the giveaway.
You wanna see Dream? Sea of Thieves trailer released. We learn that it is the same intro planned for Dream. We are watching Dream. Right now.