Dear all, This is a brief reminder regarding the upcoming joint meeting. *IROWG-11* will be held together with the *OPAC-8 Workshop* from *September 10–16, 2026*, at *Seggau Castle*, Austria. The workshop website is still under construction available at https://opacirowg2026.uni-graz.at Once it is ready, abstract submission and registration will be announced through this email. In the meantime, participants who require *invitation letters for travel approval/visa applications* are encouraged to contact our IROWG co-chair and local host committee member, Dr. Uli Foelsche ( ulrich.foelsche@uni-graz.at), as early as possible, so we can help facilitate the process. We look forward to your participation and to welcoming you to Seggau Castle. Hui on behalf of IROWG-11