That wont happen.Sony is skipping E3 for a reason.
What is most likely to happen:Either Sony just shows PS5 at PSX without any previous showing or warning, or they will have a preshow around october to fully reveal it at PSX.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1