That's the most bold statement I've ever seen. Will they accomplish that? What exactly do they have to do to achieve it?
The reply is very simple.
They won't.
But of course, media will call it redefining. They called DA:I redefining and that game doesn't know where it's own arse ends.
CDPR is capable of making a good game. Redefining?
Witcher 2 had an influence on action-RPGs. Because it was very much a focused experience that did not care much for anything else.
Dark Souls did redefine many aspects of action-RPGs. Because it was, again, focused, it was good at the parts it redefined.
These two games, are the only damn ones I would call having any influence what-so-ever in recent years. They changed things. Until they will be redefined again.
Witcher 3 doesn't seem to go that route, it's more of the same, in a bigger map. Sure, it's innovation for Witcher series. In RPGs, doing an open world game, is not an innovation, it's a design decision.
Unless Witcher 3 introduces something new, we don't know about, or does something in a truly masterful manner, it won't redefine anything. It may be a good game, but from what I've seen so far, it's not redefining.
We will see when it comes it. Or at least you will see, I'm afraid I won't have time for that.