This document is the second version of the deliverable on multi-domain data plane innovations in the PREDICT-6G project. It collects and reports advances compared to the initial version (D2.1) that were produced since then. The technical topics are following the theme set by the previous version, such as improvement of deterministic mechanisms in lower layers, and handling of non-deterministic domains; additionally, this document contains original reflections to topics such as deployment domains and device side impact of PREDICT-6G. Finally, the deliverable provides a roadmap for the data plane features during the rest of the project's runtime and collects relevant publications. You can read D2.1 here and D2.2 here.