§ 21. Time of taking effect; reservation of power to amend. 1. This statute shall take effect July first, nineteen hundred sixty-five.
2. This statute is hereby enacted subject to the reservation that it or any part thereof shall be subject to amendment or revision prior to its effective date notwithstanding the fact that such amendment or revision repeals, diminishes, impairs or suspends a power granted herein to one or more local governments.