Surprised I haven't posted this sooner so here goes.
I asked Leviathan to set up a Redmine issue management installation for me to use for OutpostHD and for OPU in general (for various projects). And it has happened!
Head on over to the Redmine Page
to check out the current projects on there.
For OutpostHD you can also use Redmine to get current up to the minute updates about progress, the roadmap and milestones and you can see any of the discussions taking place amongst the developers.
So on that note, as much as I use the Forums to discuss the nuances of gameplay mechanics and to get ideas from the end users about how they want to play the game, Redmine is used to discuss the actual implementation of features, tasks, etc. If you're interested in helping the project, go ahead and register an account on Redmine. Let me know here either by replying to this post or by sending me a forum PM and I'll add you to the OutpostHD project.