- System design requirements for total flooding have moved to a new standalone chapter.
- Information on the toxicological and physiological effects of clean agent systems have been moved to their own specific annex.
- A new chapter on impairments has been added as well.
- New clean agents such as Halocarbon Blend 55 (HB-55) and 60-bar FK-5-1-12 systems are now included in the Standard.