NX20 Replacement Plans

Any rumors or ideas when the NX20 will be updated or replaced.  I really like the handling and lenses for the NX20 but the sensor is getting outdated relative to noise.

I really do not want to buy another small camera system to go with my D800E but I am giving it serious consideration.

Are there any major announcement events/shows coming soon that I should wait and see.

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Hank K
Nikon D800E, Samsung NX20 (former RX100, 5DM2, GH2 Kit, and Fujifilm X100 shooter)