The symposium marked fourteen years since the first Catullus gathering at Newcastle, which resulted in the first thematic issue of Antichthon, 'Catullus in Contemporary Perspective' in 2006. This inaugural thematic issue of Antichthon marked the fortieth anniversary of the foundation of the Australasian Society for Classical Studies and the publication of its journal. It is especially poignant that many of the original contributors and audience members returned in 2018, and their papers appear in this second thematic volume, 'Catullus in the 21st Century.'When one compares the content of this thematic issue with its 2006 predecessor, certain topics remain constant, while new ways of engaging with Catullus also emerge. The new millennium has seen the publication of several key collections on Catullan scholarship, including Julia Haig Gaisser's Catullus (2007) for the Oxford Readings in Classical Studies series, with twenty-five chapters on the poet from the second-half of the twentieth century. Serious students of Catullus would be familiar with most if not all of the readings in Gaisser's volume. The same year saw the publication of Marilyn B. Skinner's edited collection of new work on Catullus -A Companion to Catullusin the Blackwell Companions to the Ancient World series. Skinner's extensive collation of commissioned chapters captured the innovations as well as the traditions in Catullan scholarship and complemented Gaisser's retrospective volume. 1 The contributions in this special issue of Antichthon reflect the content of both eminent volumes: the scholarship and traditions of Gaisser's collection, and the recent developments in the field of Skinner's volume. Twenty-first-century monographs are also in evidence in the articles herein, be they in the extension of ideas or more robust engagement with them.