There is a new firmware update (ver.1.33) for Samsung NX300 since 15th of December 2013. Here is the list of improvements:
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Remote ViewFinder – add touch AF function
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Remote ViewFinder – add streaming quality option
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Improved connection speed of android smart phone (Please use latest version of Upgrade Smart Camera App)
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Improved Movie recording (Framing Mode ON)
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Improved 60mm,85mm lens full time manual focus performance
link: http://www.samsung.com/us/support/owners/product/EV-NX300ZBQUUS#firmware
UPDATE: Nicholas sent us this nice comparison image: