And when I said it would incorporate some of the features, I really meant "Eventually CSS may become a very primitive scripting language with variables and functions," but I didn't quite say that because at the same time I'm thinking "JAVASCRIPT!" So to be honest, imho, CSS will never incorporate anything from Sass- ever. However, there is a good chance text editors (inferable via my `post script`) will.
P.S I recently pounced upon a project called zen coding: http://code.google.com/p/zen-coding/
Does pretty much the same thing, but with html. It's a plugin and there is support for different editors. It's pretty awesome- By does pretty much the same thing, I mean it allows you to write html code very quickly by writing in a "shorthand."
They may look similar, but you quickly realise they're not if you actually give them a decent try out.