The awaited qremesh function for zbrush was confirmed by ryan kingslien on a cesar decol webinar today as being an auto retopology tool. Although he would'nt comment to any more info about the function.

http://www.pixologic.com/QRemesher/ and click the Verold button you can see a screenshot of QRemesher in action

another great Zbrush tool,can't wait to see it in action and test it!
an official Goz for Softimage release would be great too

oh wow, I've waiting a while for this one!