I saw that and that's the bit that I think Sony need to clarify as it appears that it's going to be fairly hit and miss as to the benefit that the hardware will give titles. Obviously I appreciate it'll be down to the developers but I imagine that a lot of games may just end up with a small increase in frame-rate or graphical quality., some might even do nothing apart from ensure it's compatible. Even if Sony said something like every game going forward from release will at the minimum benefit from an increase to 60fps on PS4 Pro, which I would imagine should be easy for the system to do at 1080p, then at least you would know there's an automatic benefit to upgrading.
Also, will people take the 30fps option? I think back to TLoU remastered and after playing it at 60fps I couldn't go back to the 30fps version, even if it was graphically superior. Though I suppose there wasn't a huge difference there between the versions.
TBH I still don't really get the point. If they're releasing this year then that's 3 years since the PS4 launch. Does that mean we'll get another machine in 2019? If so would it be fair to assume that games for that machine won't be compatible with the original PS4? In which case, given that it'd be a 6 year cycle between the PS4 and it's true successor then what really have Sony done apart from convince people to buy a second machine mid-cycle?! They're saying it's an end to console generations but surely they can't expect developers to create games for new machines (PS5) but also cut them back enough so that they still work on outdated hardware (original PS4)