People (and even movie studios) are super pissed over Grace spoiling that.
She basically spoiled the ending there. AFAIK he's just seen in shadow.
I don't know much about Marvel, but I've heard talk about Osborne buying the Stark Tower a couple of times on this forum and just assumed it was something that happens in the comics. Is it really such a spoiler? After all, it's just a real estate transaction.