Currently Online 
No need. If they want to compete with the X they could simply give the Pro a price cut. The former isn't even out yet so we don't even know if that's called for yet. These are still niche products anyway. Since they need complete compatibility with their base models, they offer a marginally improved experience at a premium price. Another more powerful (and expensive) midgen console wouldn't change that. The PS4 Slim will outsell them both combined and the One S could even do the same.
The next consoles from both MS and Sony (apart from maybe some super slims) will likely be revealed whenever AMD's 7nm apu is ready for the mass market (perhaps a Q1 2020 reveal, Q3 release). If so, they will have the most identical hardware and performance of any competing consoles in history - probably a good thing if it lessens the bickering and puts more focus on software and service.
PSP3 is unlikely. PSVR2 will likely follow the PS5, presumably with a 4k screen and new, more responsive controls (possibly even built into the DS5).
