If you can, go for C++14 directly, it offers improvements over C++11.

Language features that ease your daily working with C++11/14:

- Lambdas, especially when working with <algorithm>

- ranged for loop

- auto instead of typing long types

- variadic templates increase compilation speed over the previous macro based simulation of this feature.

- the basic support for multithreading which std::thread & co offer.

And also, as always in C++: you only pay for what you use. You still can write code in old styles pretty well with C++14, same will be true for coming standards.