I expected it from Alsonso. Ferrari already conrifmed their drivers, and an other team wasn't really an option. Especially now Renault improved a lot in the last races, and was very competetive with most teams. (After mclaren, Ferrari)
But Piquet... Imo, he's just to slow, compare qualify times with Alsonso. (Alonso was faster in all, and of course also the race)
I like Piqeut though, and I hope he can improve a lot next season. If not, they should kick his ass.
And yeah, I hope Alsonso joins Ferrari in 2010