This Judicial Article shall become effective on January 13, 1969; except those provisions expressly authorizing or directing a different date; and except those provisions relating to the Supreme Court, the Court of Criminal Appeals, intermediate appellate courts and the Justices and Judges of such Courts, which shall become effective immediately upon the adoption of this Judicial Article. On or after the first Tuesday after the first Monday in January, 1968, the Legislature shall enact the necessary and appropriate laws to implement and place in operation the provisions of this Article.