Looks like it'll be a big part of Phoenix Comic-Con this coming year. 
Found on Facebook:
-------------
Phoenix Comicon
You wanted guest announcements? We've got them! And they are epic!

Phoenix Comicon 2013 is excited to announce the creator, J. Michael
Straczynski, and the cast of Babylon 5 for the 20th Anniversary: Bruce
Boxleitner, Bill Mumy, Claudia Christian, Jerry Doyle, Julie Caitlin Brown
(Friday only), Mira Furlan, Walter Koenig, Pat Tallman and Stephen Furst! 
----------
Website:  http://phoenixcomicon.com/page/1

I'll definitely be there!!

Jan
--- SBBSecho 2.20-Win32