Agile changed the way we develop and deliver versions. It also means there every two to three weeks developers will move forward and start working on something new. Receiving feedback as soon as possible has become more important. If a developer receives feedback on something he worked on two sprints ago, it will take him longer to resolve it (switching the development environment and getting the right source, think about the problem, fix it, time to build, test, check in and document the fix).