Nintendo has plan for redefining consoles 2-3 years away

[jonathanalis]

in 2015 they will be busy with QoL thing.(2015 is the earliest prediction)
in 2016 they will be busy with the handheld.(2016 is the earliest prediction)
so 2017 is the earliest date i expect. unless they launch both (in one, meaning they are fused) in the same year.