As Mobile World Congress (MWC) 2023 looms, minds inevitably turn the future. Though the real-world launches and major deals that happen in Barcelona will be firmly focused on the near-term challenges of 5G deployment and monetization, the event is also a forum for discussion of what may come next. Some of that will be ill-defined or merely hype, but such debates are also important for vendors and operators to understand what they may need to build into their technology roadmaps now, in order to maximize return on investment and avoid dead ends and wasted effort. There are several aspects of next-generation mobile networks that, judging by the pre-event build-up, will be particularly prominent at MWC. We address various aspects…