Emerging eXtended Reality (XR) technologies have been recognized as a key enabler for the design of novel immersive experiences, often relying on the fusion of the digital and physical worlds. In particular, social and collaborative XR services enabling users to meet and interact in immersive environments have the potential of leading to an evolutionary step in communication services. Among the key technologies and infrastructures needed to meet the requirements of emerging XR use cases, there is a need for high bandwidth and low-latency networks, as well as remote computing for processing and rendering deployed on cloud and edge infrastructures. In this talk we will outline emerging XR applications and implications on future network requirements. We will discuss ongoing standardization efforts and technology enablers for XR in 5G and beyond, and discuss industry forecasts which envision XR to be the next mass market mobile computing platform. The talk will also briefly present the ongoing research project DIGIPHY - XR Communication and Interaction Through a Dynamically Updated Digital Twin of a Smart Space, conducted in cooperation between the Faculty of Electrical Engineering and Computing at the University of Zagreb and partner companies Ericsson Nikola Tesla and Delta Reality.