Establishing that specified provisions in a will or trust of a decedent who dies after December 31, 2009, and before January 1, 2011, shall be deemed to refer to the federal estate tax or generation-skipping tax laws on December 31, 2009; providing for the application and construction of specified provisions of the Act; authorizing a personal representative or interested person to bring a proceeding to construe specified provisions in a will or other instrument; etc.