Rogue Sneak / Hide Question

[Beldon]

So I was reading the Wiki about the rogue and came across this:
http://wiki.project1999.com/Sneak

"Using defensive disciplines (Focus Will, Resistance) will not break hide-sneak. Feel free to heal up perfectly invisible."

"Sneak Attack will activate after being hidden approx. 3 seconds or more. Activating it will break hide but not sneak."


I do not see anything in the Wiki about Focus Will or Sneak Attack. Is this information from later expansions? or just undocumented abilities?