Go 1.13 Beta 1 is released

Hello gophers,

We have just released go1.13beta1, a beta version of Go 1.13.
It is cut from the master branch at the revision tagged go1.13beta1.

Please try your production load tests and unit tests with the new version.
Your help testing these pre-release versions is invaluable.

Report any problems using the issue tracker:
https://golang.org/issue/new

If you have Go installed already, the easiest way to try go1.13beta1
is by using the go command:
$ go get golang.org/dl/go1.13beta1
$ go1.13beta1 download

You can download binary and source distributions from the usual place:
https://golang.org/dl/#go1.13beta1

To find out what has changed in Go 1.13, read the draft release notes:
https://tip.golang.org/doc/go1.13

Cheers,
The Go Team