Well, "a day or two" turned out to be a little more like a week, and the official release is still a bit in the future, but I've just published an unofficial version of ri_cal on github.
I've been working with Adam who is using github for a Rails app. He's been feeding me bugs to fix and features to add. Most of the work in the past week has been on developing the "DSL" for creating calendars and events programatically. There are a few loose ends to tie up but if you are adventurous, you might want to play with the library. There will likely be some api changes before the initial release.
When I'm ready to make the "official" release, I'll publish it to RubyForge as well as to git hub, and the version will be bumped to 0.x.0 once I've decided what x should be.
RiCal represents a considerable effort over the past several months. I hope someone besides Adam finds it useful.