I'm wondering if Sony will do a dedicated PSVR2 Showcase or if it will be mixed with non-VR games too.
I don't know whether they would include non-VR games, but I can see there being a lot of hybrid games.
I've speculated before that a number of the unannounced first-party project reveals might be tied into the PSVR2 'event': I think that they want to avoid announcing a game's 'flat' mode early and then having a muted 'also available in VR!' reannouncement at the PSVR2 showcase/SoP. Instead I think they want the big reveal to show both aspects.