There have been several press releases and news of new JMS projects in the last couple of days.

First came the news of "Vlad Dracula", a new series that JMS is developing for STARZ.
http://www.hollywoodreporter.com/live-feed/starz-development-spartacus-thor-348044

Next came the announcement of Studio JMS, a multi-media mini-studio to bring all of his projects under one roof. Included in that announcement was the news of the return of "Joe's Comics" and four new titles.
http://www.deadline.com/2012/07/comic-con-j-michael-straczynski-hatches-multi-platform-studio-jms/

Yesterday's news was of another comic series, this one for a comic series called "The Majestic files" for Legendary Comics:
http://www.shocktillyoudrop.com/news/168601-comic-con-2012-j-michael-straczynski-announces-new-project