The annual JVM ecosystem report highlights key trends and insights from a survey of over 2000 developers. The majority of respondents, 64%, use Java 8 as their most often used release, despite the introduction of new releases like Java 11. Many developers are reluctant to adopt changes due to concerns about migration costs and the need for significant updates every six months. However, the report also shows that most developers (61%) take security seriously by applying security updates within a month of release, while some (15%) apply them immediately after release. The report provides insights into language usage, IDE adoption, and JDK release models, with Kotlin emerging as the second most popular language on the JVM, overtaking Scala and Clojure.