A few hints from Button on what to expect - still managing expectations, but I sense that he's a bit more confident now than last week. I'd predicted that the changes would be hard to spot, but Button seems determined to prove me wrong...
"There is a lot that is different, you will be able to see [the changes to] the aerodynamics of the car and you will understand the difference in airflow of the car," said Button.
"It is still the same colour, but the edges have changed.
"There are some really cool-looking little bits on the car but I don't think it is going to be enough to fight right at the front.
"We will see an improvement and hopefully that will help us understand the airflow of the car a little bit better."
I'm always up for cool bits.
Full story...
http://www.autosport.com/news/report.php/id/107286
McLaren has run the upgraded car in a straightline test, with Button confirming that this did suggest correlation had improved.
I can live with "improved". I prefer "spot on", but I can deal with it.