As reported on 9 December, the winter TCA schedule has been released and at that time Starz was not listed but the Jan 5-7 slot listed "cable".
We all naturally assumed that Starz would be there.

It now has been confirmed that Starz will be there to promote Spartacus Gods of the Arena on 7 January 2011 based on the following tweets:

Http://twitter.com/jdtvi/statuses/14007141396381696

@televisionary what day does Starz have its TCA panel?
5:22 PM Dec 12th via web
jdtvi
JD Nelson

http://twitter.com/televisionary/statuses/14018423340138496

@jdtvi Friday, January 7th.
6:07 PM Dec 12th via TweetDeck in reply to jdtvi
televisionary
Jace Lacob

According to Matt Fowler, IGN Editor (see his tweet here), Lucy will be attending.

News submitted by Barbara Davies