Surprised this hasn't been mentioned already, but I guess all the leaks have taken focus away from anything else.
According to Kerrang, there's an event in Camden this weekend to coincide with the release of the box set.
http://www.kerrang.com/the-news/win-tickets-to-a-guns-n-roses-event-in-london-this-week/
I can't find any other details online about it other than this Kerrang article.
Interesting that it's in Camden where one of the first billboards were spotted.