As reported by LightNOW on December 2, 2009, the Construction Specifications Institute (CSI) and Canadian Specifications Canada (CSC) have ended support of MasterFormat95. Licensing expired December 31, 2009, with the industry being required to switch to MasterFormat 2004.
Wayne Engebretson of Reed Construction Data has an interesting take on it here. In short, it’s time to get with the new format.