It is taking a bit to announce isnt it. Maybe they have some HUGE name lined up and are waiting for the right time to announce it, OR, maybe Lex isn't gonna have much of a presence in this, ie, like MOS, Lex-corp signs galore, but nothing more..
I really hope thats not the case. It would be a shame to not have him in WF after being teased about him in MoS.
Anywho, for arguments sake, lets say Lex is in it. If so, then for me the casting of him will need to have the same impact that the casting of crowe and costner had. It got folks excited and talking. Hopefully what is going on is they are either trying to finish the deal or are waiting for the right time to announce.