Tilman Bayer has, at long last, responded to inquiries about the as yet unreleased gender split in the 2012 editor survey:

https://meta.wikimedia.org/wiki/Research_talk:Wikipedia_Editor_Survey_2012#Looking_for_survey_results

Nearly two years ago, Tilman had said:

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Beckie and I have been working on the data during the last few days, and we hope we can wrap this up soon. In any case, we still have the ambition of keeping the timespan between the conclusion of the survey and the publication of the first results shorter than in the preceding editors survey. Regards, Tbayer (WMF) (talk) 21:13, 4 March 2013 (UTC)

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His recent posts to the talk page are his first contribution there since August 2013. He says,

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[...] we plan to publish a blog post which alongside other results from the 2012 survey will contain a more solid analysis of the gender ratio changes, e.g. on a per-country basis [...]

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Even so, we still do not have a schedule or date by when the results will be made available. Sarah (Slim) and I have asked him to provide one. I have also asked whether there are any plans for future editor surveys, and if not, why not.

Watch that space ...

Andreas