Industry 4.0 places a strong emphasis on connection, automation, machine learning and real-time data. With these descriptions, intelligent/smart manufacturing that incorporates people, technology, and other resources has undergone a significant revolution leading the globe to the new era of Industry 5.0. Responding to disruption by employing intuition to decide what to do in a changing circumstance has grown to be highly attractive and exciting, even when it has never been utilized before. The domains of modern intelligent systems and computers have also made major strides in recent years. Examples include soft computing, computational intelligence, which encompasses evolutionary computing, neural networks, fuzzy systems, and the fusion of various paradigms. Others include immune-based systems, ambient intelligence, cognitive science, computational neuroscience and systems, perspective and vision, DNA, intelligent decision-making, and support etc. This technological breakthrough has also made room for new and emerging technologies that offer important advantages including extreme low latency, highly reliable connections, sufficient bandwidth, ample data storage, and powerful processing capabilities. This paper provides a comprehensive overview of what smart/intelligent systems include, as was observed in an ongoing project where such devices were designed, and what to anticipate from the 4.0, 5.0, and 6.0 industrial revolutions.