The linux.conf.au conference, which I have presented to and love going to, just opened up its call for talks: http://linux.conf.au/cfp . They want talks about all kinds of open source programming stuff, not just Linux: Trevor and I presented about ResourceLoader in 2012, and James and I presented about VisualEditor in 2014.
LCA 2015 will be 12-16 January in Auckland, New Zealand. That's summer in the Southern Hemisphere, and the climate there is very moderate, so no sweltering heat like in Australia :)
LCA provides travel funding to some speakers, and Wikimedia funds TPS grants for people going to conferences to talk about Wikimedia-related things: https://meta.wikimedia.org/wiki/Grants:TPS . So you could even get to go for free.
LCA is basically my favorite conference - the talks are great and of high quality, they treat speakers well, and their audience gets what we're doing. This is a fun chance to show off your project. I encourage you to suggest a talk, or tell someone else that they should talk about their project.
Roan
P.S.: Thanks to Sumana for writing most of this email, and for talking me into proposing a talk for LCA in the first place back in 2011