This here will be a very unpredictable section of Sony's conference. It's absolutely certain that PS VR will be shown in some capacity, but it's unclear how much time is spent on it.
PS VR has sold over a million units, which puts it vastly ahead of all other VR competition. Sony may want to give the system a new push, especially since Farpoint just released, or the company may let the hardware continue to sell without a ton of marketing.
Regardless, we're liable to see a handful of new VR games revealed at E3. I expect two or three to get full trailers, and then a quick sizzle reel for 10 or so upcoming titles. We may also hear about a bundle for the hardware, so if you've been waiting to purchase, wait just a little longer!