At the Small Cells World Summit in London this week, the Small Cell Forum unveiled the latest instalment of its Release Program, this time focused on virtualization, a trend which will have a deep impact on small cell deployment and may, in time, spur adoption of new HetNet architectures. Release 5.1, like its predecessors, consists of case studies, technical primers, best practice guides, business cases and other resources, designed to set out technical and commercial options and to lower the barriers to deployment for would-be small cell adopters. It is a point update to Release 5, and adds 12 documents, five of them focused on virtualization (other topics include LTE-LAA and 5G). The SCF put virtualization on its agenda a…