Double bladed light sabers.
As I understand it, lighstaff is just another word for those. My point was, there's black crystals? Awesome! Although the yellow hue around them is a weird choice.
I finished the Revan book last night.
And now I'm on the verge of a complete nerd RAGE.
I read the two chapters that came out on swtor's website, and was suitably intrigued. I was thinking about getting it, but then realized that the plot had already made it onto wookiepedia when an unrelated reasearch thread led me to the appropriate pages. So being spoiled to the whole story, I don't know if it's still worth a read. Although the presence of another major playable character is definitely interesting.