Every six months, a new Java release comes along. This increased release frequency was motivated by the desire to introduce new language and library features to a broad audience quickly. Depending on user feedback, there is the possibility of making changes before the design is frozen. Cay will describe the evolution of several such features, including switch expressions, new forms of string literals, and fibers. By monitoring the vigorous open discussion among the Java design and implementation team members, we can derive valuable insights about the design process. He will also show you how to build releases for experimental features that will make it into future Java versions, such as project Valhalla (value types) and Loom (fibers). From this presentation, you will gain insights into the evolution of Java, and you will be better equipped to prepare yourself for new features.