Go 1.6.2 now available.
Change effective on 21 April 2016
Heroku has added support for Go v1.6.2.
This is now the default version of Go when
go1.6 is specified in an application’s
Godeps/Godeps.json file (for godep),
$GOVERSION (for GB) environment variable, or
vendor/vendor.json file (for govendor) and will be used on next push.
This version of Go includes fixes to the compiler, runtime, tools, documentation, and the mime/multipart, net/http, and sort packages. See the Go 1.6.2 milestone on the issue tracker for details.
For more information, see our Dev Center article on Heroku Go Support and please open a ticket if you have any questions.