This document outlines the updated roadmap of the EU 1+ million genomes initiative for the deployment of a network of nodes allowing secure cross border genomic and phenotypic data access, primarily as part of the Genomic Data Infrastructure project. The document outlines the proposed initial infrastructure, including the standards, application, and technologies within the infrastructure, and describes a proof-of-concept that was used to demonstrate the proposed infrastructure, and elicit feedback from a range of stakeholders. The document then goes on to outline the key technology (such as eID and SIMPL), standards (e.g. ISO, GA4GH) and policy (Data Protection by Default and Design principles, 1+MG trust framework) developments at a European level to help enable interoperability between different data spaces (e.g European Health Data Space). Work by 1+MG experts ensures relevance to the Genomic Data Infrastructure and improved alignment between prospective European data spaces. A roadmap is presented which is aligned with the milestones and deliverables within the Genomic Data Infrastructure project. The document references the existing Genomic Data Infrastructure helpdesk roadmap, which defines how operations will be set up following the FitSIM standard.