Requires any wilderness study area so designated after the enactment of this Act to remain in such status until the earlier of the following, after which any area not designated as wilderness shall be released and made available under such Act: (1) five years after the date of such designation; (2) the area is determined not to meet wilderness area criteria; (3) the area is determined to meet such criteria; or (4) the area is designated as a wilderness area by an Act of Congress.