So the something awful leak was playtest 1.0 . I wonder if 4.0 is the version that we'll finally see?
Actually it was just the avenger as theme that was mentioned as a for example at DDXP. Indictations are that the assassin with be a core class, hence being refered to as rare class and not a theme.
It would be very funny to me if only 1 in 10,000 5E PHB's had the assassin class--and you had to own one of those books to be allowed to play the class.
I was under the impression based on other comments from people in this forum currently playtesting that the information in the "something awful" thread was spurious at best.
Short basic games = more players.
-YRUSirius

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.