GTA 5 is coming at the end of the console cycle. Does the advance of technology interest you? Do you think, 'Oh wow, what will GTA 6 look like on a PS4?'
Of course we're interested. But no, not in terms of GTA, because we're always working on the current game. We look at the tech at a more practical level: what will be ready for which game that we're working on further down the line. We don't have another GTA in development, we don't work on three of these games at a time. That would be phenomenally depressing. So, in terms of GTA, no. We get pitched by the hardware manufacturers on what they're planning to do and our tech guys come up with ideas on how that could be used. Does this influence design decisions? Of course. But we're not sat there fantasising about 10 years down the line. We're so busy with what we're doing right now.
So he actually did not say that GTA V will not be released on PS4 or that they have no plans to do so.
He actually said that so far they didn't consider PS4 as one of the main platform for their game. They didn't develop games specifically for this platform.
He said that they concentrated on the development of GTA for old generation of consoles. But it doesn't mean that they can't port GTA V for next-gen with a bit better graphics.
GTA V was developed specifically for old generation of consoles and it will not be the real next-gen game. That was the point of his answer