The Content of The Chicago Manual of Style
The editorial guidelines presented in the 16th edition of The Chicago Manual of Style will remain consistent throughout the life of the edition and in all formats in which the Manual is published. For the print edition, the only changes made between impressions are typographical corrections and minor clarifications. The content of the Manual in this online edition corresponds to the most recent impression of the print edition, currently the third (2012).
In keeping with this policy of consistency, the text of the Manual in the online edition retains some page references that apply only to the print edition, as in the index.
Although the content of the Manual itself will not be substantively updated or expanded for the online edition, the Chicago Style Q&A will continue to be published monthly, offering guidance on many issues related to those treated in the Manual.