Some news came earlier.
>yes we are on track for a June release
>there might not be another playtest before the release (this is the way I interpreted it)
>more performance improvements
>singleplayer campaign + skirmish with other players vs. AI bots will be available
>yes we plan to support the game in the future with DLC, etc.
I think if you've been following this game closely then you probably already knew about most of this, but here is the post anyway.