14nm chips can be expected on the market sometime during 2014
As we have come to expect, Intel will be starting the production of 14nm chips this year. For the production of these chips Intel has appointed three factories that are already prepared for 14nm production: D1X in Oregon, Fab 42 in Arizona and Fab 24 in Ireland. Halfway through 2013 Intel should be sending out prototypes for testing. Intel will begin mass production of 14nm chips in 2013 and they should become available on the market sometime 2014.
The current 'Ivy Bridge' chips and the 'Haswell' chips that we can expect in June are still based on 22nm. The first 14nm chips that we can expect will be codenamed 'Broadwell'. The advantages of 14nm chips over 22nm chips include lower power consumption, possibly lower TDP, and as a result they will allow for more computing power per surface area.