My work on O'Reilly Fluent has severely hit my time for working on it and I like to 'rebuild' the course most times I run it. I won't make an announcement until I'm 100% happy for it to go ahead as I don't want to disappoint anyone but it should be "very soon"! :-)

Mine is probably the one most focused on intermediate developers rather than beginners per se. It's for people who already know and work with Ruby but who want to flesh out their understanding of the Ruby object model, metaprogramming, project structure, library building, and so forth.