In this appeal from the denial of a mandatory sketch plan, the Commonwealth Court was asked to determine whether § 917 of the Municipalities Planning Code (“MPC”) imposes an absolute 6-month deadline for acting upon a special exception approval to prevent subsequently adopted ordinance amendments from becoming applicable to the underlying project. In reversing the decision of the Court of Common Pleas of Montgomery County, the Commonwealth Court found that the 6-month deadline was not absolute and could be extended by a municipality in its zoning ordinance.