She's now listed on the site as a guest.
The amazing guests keep coming! We are ecstatic to welcome Lucy Lawless from Xena, Battlestar Galactica, and Spartacus (among many others)!— DragonCon (@DragonCon) July 30, 2013
Dragon Con takes place August 30-September 2 2013 in Atlanta.. Ticket information here. Of interest to Sparty fans, Liam Mcintyre and Manu Bennett are also attending.