The seventeenth edition was published in September 2017. It offers new and expanded style guidelines in response to advancing technology and social change. It also includes new and revised content reflecting the latest publishing practices and electronic workflows and self-publishing. Citation recommendations, the glossary of problematic words and phrases, and the bibliography have all been updated and expanded. In the seventeenth edition email lost its hyphen, internet became lowercase, the singular "they" and "their" are now acceptable in certain circumstances, a major new section on syntax has been added, and the longstanding recommendation to use "ibid" has changed due to electronic publishing.