Confirmed: Samsung NX1 records 4K video. Announcement on Monday 12:00 Berlin time.
As you can see from the official Photokina flyer image on top Samsung will have an official announcement on Monday September 15 at 12:00 Berlin time.
And I can tell you with a 100% certainty the NX1 can record 4K video. Now all what we still miss to see is a picture of the camera!