law becomes effective as of FY 2012, that means it will effect all the Priority dates for EB2 and EB3. EB2 wont be current until all the indians get the Greencards, same applies for EB3.
I have attached the bill
http://www.gpo.gov/fdsys/pkg/BILLS-112hr3012ih/pdf/BILLS-112hr3012ih.pdf