Software development is a continuous emerging area and newer and advanced techniques are being devised by the experts in this area. There is so much research and work in this field that if a person does not keep abreast with the developments then he would not be able to keep pace in the cut throat competition in making a bright career here. It is imperative that a software developer should keep in touch with these new techniques through internet or educational sites which offer tutorials etc in these emerging technologies.
Some of these fields and emerging trends are Artificial Intelligence, Digital marketing, Languages like Python and other similar ones, Data Science, Cross-Platform Development Tools, Blockchain, Internet of Things. Continuous Delivery and Deployment., Progressive Web Apps, Low-Code Development etc. One has to look for information and new techniques being developed in some of these areas as per one's focus and interest in context with one's career.
Knowledge is power.