The tools have changed greatly with the Unity 6 generation, but the problems we face are almost the same as in the previous book. New features are new options for old problems. With more options comes the need to decide which one to choose.
Where to look, what to compare against, and where to stop. Now that AI coding agents handle part of development, I feel that having criteria for this judgment matters more, not less. The range of measurement and fixes we can delegate to agents will keep growing, but it is still up to us to decide what counts as good enough.The line at which you can say quality is assured differs from project to project and is revisited as operation continues. Drawing that line yourself is the first step of tuning. I hope this book helps you do so.
Unity and devices will keep changing. Sooner or later this book will need a revision. When that time comes, we hope to bring together what we learn in the new environment and deliver another book that follows the previous one and this one.
Thank you for reading to the end.