An Act amending the act of December 16, 1977 (P. L. 327, No. 96), entitled "An act amending the act of March 11, 1971 (P. L. 104, No. 3), entitled, as reenacted and amended, 'An act providing property tax or rent rebate to certain senior citizens, widows, widowers nad permanently disabled persons with limited incomes; establishing uniform standards and qualifications for eligibility to receive a rebate; and imposing duties upon the Department of Revenue,' providing for an additional filing period, estimation and anticipation of revenues," providing for additional filings for the calendar year 1977.