Yeah, I think that's the ticket - we should probably just discount everything that says Darth Vader is actually a total pussy.
Starwars is pretty much the last thing I'll ever care about, but I find this kind of interesting. I guess there's so much lore, etc out there that they have to make this announcement in order to make way for the new movies. I'm guessing the task of coming up with a new plot line that didn't contradict something someone else has done would have been ridiculously daunting.
Honestly though, it may be because I don't get super into things like this, but I think people lose their shit over things being "canon" way too much. Whatever pop culture fandom you're talking about, the cultural significance is probably minor enough that it really doesn't matter. Make your own Starwars universe up in your head that includes your favorite book. Who gives a fuck?