Haug not confirming radical upgrade reports

Norbert Haug is keeping silent amid reports Mercedes is set to introduce an exciting upgrade package in Barcelona this weekend.

The team has confirmed that a significant package of new parts will be debuted in Spain, with rumours suggesting a Red Bull-style flexible wing and a Renault-style front exhaust layout may be among the changes.

"We have quite a few things in the pipeline, but Ross (Brawn) will hit me if I tell," Mercedes’ motor sport vice-president Haug joked in an interview with ibnlive.com.

"So, (there’s) no chance that I can be specific," he added.