An Act amending the act of June 8, 2001 (P.L. , No.16), entitled "An act amending the act of July 28, 1953 (P.L.723, No.230), entitled, as amended, 'An act relating to counties of the second class and second class A; amending, revising, consolidating and changing the laws relating thereto,' providing for optional assessed value limitations; extending the deadline for assessment appeals in counties of the second class; and making a repeal," providing for retroactivity.