The shift towards electronically mediated texts entails major structural issues for libraries and the publishers and aggregators who supply them. Stakeholders within the digital supply chain are struggling to re-conceptualise the book as artefact (Esposito 2003). Academic and scholarly libraries are at the forefront of these changes and many are preparing for a significant shift from physical to electronic material presentation within the next few year. Within this context, we review some recent developments in the technology underpinning e-books, evaluate a number of e-business publishing models and introduce some of the key players.