The new Samsung NX200 will be displayed at the IFA event in Berlin (See Redcrow post and Sammyhub). This means that the rumors saying it will be announced on September the first are very likely correct.
It will have a new 20 Megapixel sensor and no built-in EVF.
On the same day also Fuji will announce the new X10/X50. A mirrorless camera will probably be announced at the CES event in January only!