AFAIK the literature still says antidepressants have an effect better than placebo.
Do you have specific meta analysis in mind?
Even Kirsch's paper from 2008 results in that, and it's probably one of the most (or the most) harsh paper on antidepressants.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4172306/pdf/zfp_222_3_128.pdf
The background on this story is a community of science people found a bunch of unpublished studies that, when weighed with the studies which supported antidepressant approval, showed they were no more effective than placebo in mild-moderate cases.
Except unlike placebo, antidepressants express a wider range of severe side effects, like worsening depression and suicide.
Isn't this a scandal? How do psychiatrists still prescribe these en masse?