JMS has been hinting at a new B5 project that's not the re-imagining/reboot (which is currently on hold pending a possible Writer's strike) that's been in the works for some time and is fully completed.   Originally he expected to be able to announce it at San Diego Comic-Con but as of last week, it appears that the unveiling may come on or about May 3.

This morning, JMS posted this tantalizing image: