There is still a reasonably bad amount of flickering in the game. The shadows themselves aren't clean cut shadows, the edges are rough and you can see pixels at times, GT5 had a much better shadows and edges, but that was after updates were rolled out. Keep in mind my laptop has more processing power than the PS3, so don't expect it to pull off PS4 wonders.
The machine is limited, so its a wonder how at times the game looks stunning, all we can hope with future updates is whether or not PD will make the game look stunning at all times.