Another Damned Medievalist and I are closing in on starting the writing group. We were supposed to have an announcement, CFP up this morning, but as ADM said in her reply to my e-mail (entitled "itotallyfuckingforgot"): "eyeballs, alligators, etc."
Like Strunk & White, ADM is a fan of brevity.
So, we're batting a real opening announcement back and forth over the course of the day, and it will be cross-posted later tonight or perhaps tomorrow, at which point you can see if it will work for your needs right now, and sign up. First "Term" will begin next Friday. If it doesn't work for you right now, don't worry: another one will be along in the fall.
Watch this space!