I'm not entirely sure what this means, or what the implications are but...
http://twitter.com/#!/F1grid/status/70467631450304515
A follow up from Scarbs:
http://twitter.com/#!/ScarbsF1/status/70497583147134976
BREAKING NEWS: McLaren engineer @RealSimonB says there will be no blowing off exhaust gases allowed off throttle this weekend #F1
http://twitter.com/#!/F1grid/status/70467631450304515
A follow up from Scarbs:
But I did hear a rumour about a limit on exhaust flow on the overrun to reduce the blown effect off throttle. Something like 10-15% of max
http://twitter.com/#!/ScarbsF1/status/70497583147134976