In this chapter, emerging trends and related issues of thin films have been described in detail. With the emerging scope of technology, thin-film growth production is increasing greatly. The recent innovations and improvements influencing the direction of thin-film deposition processes are explored in the chapter on emerging trends and associated concerns in thin-film technology. The growth in acceptance of leading-edge depositions like CVD and PVD is driven by the industry need for materials with improved performance characteristics. For optimized step coverage, adhesion, and film characteristics on challenging substrates, this chapter addresses hybrid approaches that merge the best features of PVD and CVD. New material discussed in the chapter is sophisticated materials, namely nanomaterials and metamaterials. These are fast growing and start being more popular in the thin-film application in several industries, such as electronics, optical, and renewable energy fields. It addresses the aspect of sustainability in thin-film production, considering scalability, cost, and environment-oriented matters. Additionally, the chapter takes into account new technologies, such as machine learning and artificial intelligence, which could be applied to improve deposition procedures and predictive maintenance. Therefore, the chapter exhaustively addresses changing trends and future projections regarding the field of thin films. It advocates for the role of thin films in raising technological applications and solving present-day problems in material science.