When do the first set of improvement "packages" come out?

Usually it takes a couple of races before we hear about them but are there significant updates scheduled for this weekends race? Ferrari and McLaren are behind, very slow, can they make enough improvements in a few days to catch Brwan GP?

Is anyone in the "know", has anyone read anything on the net or in newspaper about this, did the SpeedTV guys say anything?

 

I was thinking the exact same thing. Thanks Gents.

The reason I asked was, Ferrari, Brawn and BMW all brought new bits to the track Friday... things they tested during the winter and now that there is a ban on testing during the season, they only have Fridays to try new components. Brawn brought {I think} a new nose, or new winglets on the front wing, Ferrari brought an altered rear wing and BMW brought a new front wing design. I thought maybe these teams and others had more items to try on?

P.S. I just read McLaren won't be challenging for a podium this weekend and they admit they "lucked" into a podium in Australia.

 

I've done all the calculating from Australia and Brawn GP has a .450 second advantage on the closest competitor in race trim. Qualifying is more of a crap shoot since all of the other cars will be at different speeds, with in and out laps, different fuel loads etc.

So the question is after all the teams make their "0.200 second improvements" before the next race, can RBR, STR, Toyota, Renault secure their 0.200 second improvement while gaining some ground on Brawn? A half a second a lap can seem like a lifetime of failure.