EricHiggin said:

Maybe it's just me, but based on how other slides and info boxes were shaped and filled in the presentation, this one seems a little odd and empty...

PS5

PS4 Pro

PS4

Space (PS3)

Space (PS2)

Space (PS1)

I'm pretty sure the shape was just kept after demonstrating PS3 with PS2 internal hardware in it. It was done for simplification, not as a hint of anything.