I've published an article, "Getting on Track for a Sustainable Retirement: A Reality Check on Savings and Work" in the current October 2011 issue of the Journal of Financial Planning. I'd like to think that with some further development, the methodology outlined in this article can provide a useful contribution to the field of retirement planning. I finished writing the article at the end of June, and I discussed it here then, but these days have been working on other issues.
CanadianInvestor, who runs a blog named How to Invest Online, has written up an excellent summary of the article. I couldn't have said things better myself, so let me refer you to his/her (?) write-up if you are looking for a brief summary of the article, accompanied by extra interpretations with which I fully agree.