In August, we provided an overview of the recent increase in regulatory and private litigation activity around per- and polyfluoroalkyl substances (PFAS), colloquially known as “forever chemicals,” and potential insurance coverage for PFAS liability. There have been important developments on the PFAS front in the past few months. Companies with any connection to PFAS need to be cognizant of the evolving regulatory landscape and be prepared to defend against potential PFAS liability. Fortunately, insurance coverage may be available to help mitigate these fast-growing claims—including coverage under historic general liability policies.