This dynamic survey offers an “entry point” for current research in oriented matroids. For this, it provides updates on the 1993 monograph “Oriented Matroids” by Bjö̈rner, Las Vergnas, Sturmfels, White & Ziegler , in three parts:
1. a sketch of a few “Frontiers of Research” in oriented matroid theory,
2. an update of corrections, comments and progress as compared to , and
3. an extensive, complete and up-to-date bibliography of oriented matroids, comprising and extending the bibliography of .