Dear users of OPARA, on Fri, 1 Mar. 2024 the OPARA service was updated to a new software release. Please use the new OPARA website at https://opara.zih.tu-dresden.de/ for new data submissions. Your currently pending submissions for review will be finished here, on the old website. The data of this website will be migrated in the near future to the new one. Your DOIs will remain valid.