As you can see in the two tweets above, Grant Morrison was quite clear on where he stands with Ra's al Ghul's eyebrows with Batman Incorporated artist Chris Burnham. Given the identity of Leviathan (spoilers: Talia) some expected Ra's would make an appearance given that usually where there's
Honestly though, I wouldn't expect Ra's to have THAT big of a part in the book, maybe it's a flashback. Why? Because Grant Morrison did say: "I don't like Ra's al Ghul much, and I think it was actually a good idea to get rid of him."
(Source: Chris Burnham's Twitter)