With the upcoming war between "WB Pirates" and "WG + [Shichibukai - Jimbei]" , we may discuss how this battle will end …
However , in the chapter #430 , Sengoku mentioned something about the "Golden Lion" !
Wait ... Where I saw this name ? Oh , right ! In the 10th Movie's trailer !
( http://www.apforums.net/showthread.php?t=16796 )
There we see Whitebeard , Shanks , Garp , Sengoku …
Considering that the movie is NOT canon , we can see that WB will NOT die in the war ...
Also: I just noticed something , however I don't know if it's important or not. In the trailer , WB's big scar on his chest is a lot bigger , maybe a result of the fight ?
