I actually doubt it's anything to do with Brawn; they want to wait until the end of the season - or at least until the championships are sewn up - so as not to distract their drivers.
QUOTE (potmotr @ Oct 1 2009, 21:01)

...any others which might be shocking?
Raikkonen to Toro Rosso.
Liuzzi to Williams, Rosberg to Brawn, Barrichello to Force India.
QUOTE (potmotr @ Oct 1 2009, 21:03)

It would be a bummer if Grosjean only got a handful of races because of politics involving Renault and Briatore.
I don't mean cutting him loose entirely. I'm thinking more along the lines of dispatching him to a new team - someone like Campos or Manor - so that he can build that experience up. Then, Renault can get a relationship going with a new team and maybe explore the possibilities of supplying an engine in the future, with the promise of a race seat for Grosjean once he's expeirenced enough and once Renault re-invent themselves as a new team and start hunting for wins.