The Spanish translation has been published in Buenos Aires by Barbarroja Ediciones with the title Explicando el Pósmodernismo, la crisis del socialismo. The official release will be in November 2014, to coincide with my trip to Argentina to give some lectures and seminars.
Here’s a sneak preview of the lively front and back covers (click to enlarge):
(The original English volume is Explaining Postmodernism: Skepticism and Socialism from Rousseau to Foucault. Please go here for information about other editions and translations)
Another large step. Nice to see.