The Planning Board, in accordance with Town Law § 278, may, simultaneously with the approval of any plat, make any reasonable change to the regulations established under this chapter with respect to the land so platted. Before the Planning Board shall make any such change, there shall be a public hearing preceded by the same notice as in the case of the approval of the plat itself. Upon the filing of the plat in the office of the County Clerk, such changes shall be and become part of the regulations of this chapter, shall take the place of any regulations established herein by the Town Board, shall be enforced in the same manner and shall be similarly subject to amendment.