The new Fuji X100S looks like it could give the RX1 some competition.

I consider the X-Pro 1 or X-E 1 with the upcoming 1.4/23mm lens to be the real competition to the Sony RX1 as it gives exactly the same DOF and same noise performance ( because you can use 1 stop lower ISO ).

plus: you got the opportunity to use different lenses on it if you like.

The Sony RX1 is a wonderful camera but it's not great value.

--
Joachim
http://www.littlebigtravelingcamera.com