Based on the current results …
some like us are pissed others like spear are going to be quite content. 
I dont plan on doing anything to my sites until the cha cha is over.
It does appear at this time that sites that utilized some sort of optimization just to improve rankings are going to be unhappy. E.G. dashed domains, high keyword density, excessive homepage partner linking, etc etc
Anything they determine was done to increase your rankings and not to provide your visitors with useful content may very well be subject to a penalty … Of course thats early speculation – time will only tell.