The NISO Shared E-Resource Understanding (SERU) Working Group has released a draft best practices document (The SERU Approach to E-Resource Subscriptions: Framework for Development and Use of SERU).
According to the press release, this document "presents a shared set of understandings to which publishers and libraries can point when negotiating the sale of electronic content. The framework offers publishers and libraries a solution to the often-burdensome process of bilateral negotiation of a formal license agreement by allowing the sale of e-resources without licenses if both parties feel their perception of risk has been adequately addressed by current law and developing norms of behavior."
(Prior posting on SERU.)