According to this article on the Edmonton Sun website, Tool are to appear in the upcoming documentary Rush: Beyond the Lighted Stage.  There’s no detail on what kind of appearance this would be, but my guess is that one or more of the members will appear to recall some kind of memory in regards to Rush, possibly their memories of a live show.  Or maybe even Danny talking about Neil’s influence on him.  We’ll see…

Thanks to imbread_love_child for the tip!