Lang - Mar 8th 2017

Dep - the candidate for official dependency management tool is targetting stability by the end of go 1.9 development cycle.

Better errors & performance, private repos and CGO support is supposed to be done during go 1.10 cycle.

Merge into go toolchain is not being promissed at this time, but if it happens the earliest go release that might include it is 1.11 in second half of 2018.