I'm going to quote what I told some one else on this thread:
Ok, but see, this then is CDPR taking credit for what Microsoft is offering. They're claiming they believe that every gamer should not have to pay for upgrades but this is really MS offering this, not them. So we should be thanking MS, not CDPR who is just taking advantage of a feature some one else is offering. IF this was from CDPR, we'd see this on Playstation too. Hell, if they really put their money where their mouth was you could buy it on one platform and get it on any other platform regardless of what it was. Not that I have a problem with buying a PC version if I have the PS version, but they're the ones making this statement.
See the person I quoted on this thread... this is MS's policy and CDPR is taking advantage of it to claim it's theirs. So, no gaurentees at all it's the same with PS5. And honestly, if it was, why would they specifically target MS and ignore playstation which they already announced it was coming on?