Samsung is not really a very secretive company - their products usually leak online months in advance. I sometimes even lose track if a certain camera is already announced or not. This is the case with the Samsung NX3300 - various pictures have been leaking online for months. The camera is now even listed on the official Samsung website, but I do not remember seeing an official announcement (the user manual can be downloaded here).
The NX3300 camera is already available for sale on newegg.com:
Here are all the details of the Samsung NX3300:
Additional Samsung NX3300 images:
