Odyssey 2020: The Speaker and Language Recognition Workshop will be hosted by NEC Corporation and Tokyo Institute of Technology in Tokyo, Japan, on Nov 02-05, 2020. The workshop is an ISCA tutorial and research workshop held in cooperation with the ISCASpeaker and Language Characterization special interest group. For the first time, Odyssey 2020 will feature a tutorial day on Nov 01, 2020, before the Odyssey 2020 workshop. The tutorial day would further strengthen the Odyssey 2020 as an ISCA Tutorial and Research Workshop (ITRW).