In a Federal Register notice issued today, the FAA announced a delay in the effective date, from March 13, 2017 to March 21, 2017, of new rules that would have broadened the permitted use of Enhanced Flight Vision Systems (EFVS) during take-off and landing. Operators of aircraft equipped with certified EFVS are currently authorized to use those systems in lieu of visual references to descend from the MDA/DA to 100 feet above the touchdown zone.
Source: avwebEnhanced Flight Vision System Rules Delayed