Seems quite obvious that Renault did improve the most of all teams, even if Alonso will pit earlier than everybody else. When asked why they have improved so much, Briatore said: "Because we didn't improve before."
It's definitely good to see Renault being up there, although we'll still have to wait how Alonso's strategy will work out.
I'm a little disappointed that Heidfeld is so slow. I hope he's on more fuel, but judging by what Theißen said, he's probably not. I wonder what his problem is. Kudos to Kubica, though. He seems to be the driver who has improved most over the last year.