I wonder if this means we'll see the Red Skull (the original, or a new one). After all, it doesn't really make sense to have Crossbones if the Skull isn't somehow involved.
ATTENTION: The rumor about WB's "no jokes" policy is 100% correct. No one should ever doubt any rumor about any upcoming movie, even in cases where it contradicts rumors that have previously been reported. In those cases, both rumors are true.
In other news, Bryan Cranston is playing Lex Luthor, Emily Blunt is Wonder Woman, Benedict Cumberbatch is Martian Manhunter, and that guy from Teen Wolf is Batman.