This video shows some of the upcoming Samsung NX products (the previous video was promptly removed):
Update: the video was removed from Vimeo.
One of the lenses in the video looks like the previously rumored 20-50mm f/3.5-5.6. Looking at the picture from the end of the video, the Samsung NX100 appears to be bigger than the NX10. New accessories, like an external flash and electronic viewfinder, are also shown. The NX100 is expected to have the same sensor as the NX10 (14.6MP APS-C CMOS), even though some reports indicated a new 16MP sensor. As previously reported, the Samsung NX5 will not be available in the US.
Expect the official announcement on September 14th, 2010.