Because of the COVID-19 outbreak, the iPRES2020 had to be postponed to iPRES2021. With the support of the whole community, the 17th International Conference on Digital Preservation, iPRES2021, will be held at the National Science Library, in Oct 19-22, 2021, Beijing, China, and will be organized in a hybrid mode. iPRES2021 will be co-hosted by the National Science and Technology Library (NSTL)and the National Science Library of Chinese Academy of Sciences(NSL).