Release planning involves decision making on assigning features to sequence releases in incremental software development. Having a good plan for new release can improve the future of software. There are several release planning methods and approaches for release planning and some of them are based on modification and changing the delivered releases or re-planning of the product. It means based on old releases and features utilized in them, new releases are generated and companies start to

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... n for improving their old product. In this paper, we are going to investigate release planning methods that are based on re-planning for a new release. We evaluated and investigated two release planning methods, PARSEQ and Lightweight, and compared the processing models that are based on re-planning.