The Wing Warrior - learn more at www.facebook.com/thelegendriders
Weren't Bounty Hunter rules coming out too? Or was that later in the year?
I think so, but considering the new tiles that come out this month have a whacking great chaos symbol on them, I think we'll see chaos cultists soon. And genestealers are really popular - a lot of people want to see them in Necro - so I won't be surprised if it's them either (some of the new tiles have some kind of "xenos" theme too).
I'm going to stand by my guess for now.