Now's a good time to get your proposals in for Wikimania 2013 (Hong Kong, 7-11 August). Right now I see 2 proposals concerning the gender gap https://wikimania2013.wikimedia.org/wiki/Category:Submissions, and I'm guessing there could be more. What I personally would be most interested in seeing would be skillshare to show people how to be better allies to women on the projects, both onwiki and via other channels (including face-to-face).
https://wikimania2013.wikimedia.org/wiki/Submissions The deadline is 30 April.
I also want to draw your attention to Open Source Bridge, Allied Media Conference, and the Grace Hopper Celebration of Women in Computing. These are conferences that are interested in empowering everyone, using technology, and have a feminist social-justice focus. If you lead a session at one of these conferences, you are eligible for Wikimedia Foundation's Participation Support subsidies https://meta.wikimedia.org/wiki/Participation:Support. Last year, the open source and Wikipedia sessions at Grace Hopper and Open Source Bridge were very well-attended.
Allied Media Conference: 20-23 June, Detroit, Michigan, USA. Call for proposals deadline: 8 March. http://alliedmedia.org/news/2013/02/01/its-time-propose-session-amc2013-read...
Open Source Bridge: 18-21 June, Portland, Oregon, USA. Call for proposals deadline: 9 March. http://opensourcebridge.org/blog/2013/01/2013-call-for-proposals-now-open/
Grace Hopper: 2-5 October, Minneapolis, Minnesota, USA. Call for proposals deadline: 15 March. http://gracehopper.org/2013/participate/call-for-participation/
Go ahead and submit stuff! And remember, it's okay to submit multiple proposals per conference.