Tom Mens, Yann-Gaël Guéhéneuc, Juan Fernandez-Ramil, and Maja D'Hondt. Guest Editorial: Software Evolution. In Tom Mens, Yann-Gaël Guéhéneuc, Juan Fernandez-Ramil, and Maja D'Hondt, editors, IEEE Software, volume 27, chapter 1, pages 22--25. IEEE CS Press, July--August 2010. Note: 4 pages. [Text ] Keyword(s): Topic: Evolution patterns, Venue: Software.