Only one Event won't affect that much, but the following Events will build Hype over Hype and this will affect sales for sure.
There will be a healthy and rich word of mouth ;) The best showing before Launch has yet to come. We just got a first Glimpse of PS5.
”Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world.”
Harriet Tubman.