Even if they are working on an expansion, almost all of the stuff being said about the new version reeks of absolute bull**** and is obviously just a hoax.
Could they be working on a new version? Who knows.
but that twitter account is lies
--
http://28.media.tumblr.com/tumblr_lcb35gGx0t1qailr4o1_500.gif
http://www.megavideo.com/?v=57N0YAEJ