I have played this game in Korean and Philippines version
for about 3~4 months,
however, I haven't heard/seen/learned that there is a
cloaking class.
May be in the US version, they will incorporate this class
in the game.
BUT, as far…
it is too early to discuss this since it is not on release yet,
however, according to other websites and forums,
I heard its game balance is approaching in pretty good shape,
when their populations are similar.
I have played this game in Korea last year as well,
it was my first MMORPG game in my whole life.
I thought it was brilliant game and playing RF led me to
this site. I can't wait til its release in US