It's an interesting theory and I would say holds significantly more water than them announcing the start of the GT.
Having said that, I would ask why bother? Right now the org has the R&F running around like headless chickens trying to keep up with all the changes they keep pushing through. The videos at the RC are designed to build expectation, fear, speculation and so on.
Simply put, they don't need to say anything. The R&F are making it up themselves so why bother putting themselves directly on the line by making definitive statements that could expose them further down the line?