David L. Mobley and Daniel M. Zuckerman have self-archived "A Proposal for Regularly Updated Review/Survey Articles: 'Living Reviews'."
Here's an excerpt:
We propose and encourage the publication of review/survey articles that will be updated regularly, both in traditional journals and novel venues. We call these "living reviews." This idea naturally builds on the dissemination and archival capabilities present in the modern internet, and indeed living reviews exist already in some forms. Living review articles allow authors to maintain over time the relevance of non-research scholarship that requires a significant investment of effort. We also envision living reviews leading to the creation of a new category of review—review papers published as living reviews in a purely electronic format without space constraints. This will also permit more pedagogical scholarship and clearer treatment of technical issues that remain obscure in a brief treatment.