Development is mainly done by only one person. If you feel like contributing, every patch or source code is welcome.
I started the preparations to get the package into Debian testing, so that it will sooner or later show up in the main Ubuntu repositories. I already found a mentor/sponsor which helps me to clean up the build package.
The next plan is to implement the gant sources (http://cgit.get-open.com/cgit.cgi/gant/) into the plugin to support the Garmin Forerunner 405 (ANT). I do not own this device, nor do I have access to it.
Someone forked the gant sources to support the 310XT - might be nice to also have a look there (https://gitorious.org/quickroute-git/gant)
I also plan to offer a rpm repository, so that Fedora user will receive their updates automatically. Can anyone help me with the OpenSuse Build System? Seems perfect to support many distributions.