Adoption of amendments; effect of plan approval. In the event the land development plans are approved by the Board of Supervisors, they may adopt an amendment or amendments, in accordance with the procedural provisions of the Pennsylvania Municipalities Planning Code, Act 247, as amended, to the Zoning Map of the Township to rezone the tract or tracts to such existing use districts as will permit the implementation of the plans. If such amendment or amendments are adopted, the landowner and/or developer shall be bound to comply in all material respects with the approved plans submitted, as well as with the limitations contained in the standard use districts. The developer, in turn, shall have a vested right to proceed according to the plans and zoning amendment or amendments for a period of 15 years, provided that application for building permits to begin development is made within two years of enactment of zoning to allow for implementation of the plans, and provided that the developer does not abandon the plans at any time by failing to take action thereunder for a continuous period of two years.