Michael Hurst has posted the following on his official site
April 2011: Directing first episode of Spartacus: Vengeance
Michael is also a producer for the new season and will later be directing episode 6.
and in Lucy's message about the AUSXIP Charity Auction, she added the following about Spartacus: Vengeance:
Now I have to get back to work on Sparty. My internet has been down so I have been trying to do research on my little iPhone. Not very good. I am so excited by the new direction for my character. Bizarre stuff! Michael Hurst and I are psyched about what we're about to do. Wish I could say what, but it would ruin the surprise.
Up and at 'em!