Aug.1 ( A long-awaited summer break, including mandatory factory shutdowns, lies ahead for F1 team members.

But the previously dominant Red Bull, beaten by Ferrari and McLaren at the last three grands prix, is planning a significant upgrade for the RB7 to debut at Spa-Francorchamps later this month.

“McLaren have made the biggest leap in the blown diffuser (area),” team boss Christian Horner told Der Spiegel in Hungary, adding that there is still developmental “potential” in Red Bull’s car.

The report said a new floor and diffuser, to be tested in Friday practice in Belgium, should make the Red Bull three tenths per lap faster.

Brazilian journalist Livio Oricchio said it is a myth that F1’s smartest chiefs will simply lie on beaches in the next few weeks.

“Who really believes that, as McLaren and Ferrari move ahead, Adrian Newey for example says to his guys tomorrow at Milton Keynes: ‘Ok guys, see you in two weeks!'”

Actually, more than 100 points ahead in the constructors’ and 88 points clear of the first non-Red Bull in the drivers’ chase, Red Bull are not panicking.

“We are on a par with McLaren. And we have a head start,” consultant Dr Helmut Marko told Kleine Zeitung with eight races left to run in 2011.

He also confirmed that development of the RB7 is moving ahead.

“We will continue to make the car better,” said the Austrian.

Die Welt headlined after Sunday’s result that second place was “The perfect defeat” for German Sebastian Vettel, whose championship lead actually extended due to Jenson Button winning.

“I definitely can live with P2,” he said.

“Perhaps we don’t have the strongest car at the moment, but we can still achieve good points.”