I'll quickly summarize what was posted in the recent news on June 29th.
Basically, there's a collection of images showing off a gun range in the Dreamworld and a collection of weapons (L96, M4, M16, SPAS-12, RPG-17, some semi-auto handgun?). In the post he mentions that he's planning on adding a zombie/monster survival mode to the Dreamworld. In the comments, he said he is hoping on releasing this update by the end of this month.
Judging by his previous posts and what he's been doing content wise, we probably won't see any main story-line content (dungeons and such) until 0.8.9.