From the January 10 post to the Liblicense discussion group by Richard Dodenhoff, Journals Director for the American Society for Pharmacology & Experimental Therapeutics:
The journal Pharmacological Reviews (ISSN 1521-0081) has moved to continuous publication: articles are being published in their final form as soon as they are ready instead of waiting for complete issues. This allows articles to be published up to three months sooner than in the past. Several articles in the January 2013 issue are already online. See http://pharmrev.aspetjournals.org/content/current.Posted by stemp003 at January 11, 2013 1:41 PM
The January 2013 issue will be published in a small number of batches within the next two to three weeks. Future issues will close on or about the first business day of each calendar quarter (April 1, July 1, October 1).
Readers have the option of being notified when new articles are published and/or when an issue is complete. Pharmacological Reviews generally publishes 8 to 10 articles per issue. Articles may be published singularly or in small groups. The number of continuous publication alerts will average less than one per week.
Pharmacological Reviews articles will continue to be paginated sequentially, and each will be assigned to a volume and to a quarterly issue for clear citation. The journal is published as one volume per calendar year.