Hello Go App Engine flexible environment users,
We are pleased to announce the availability of Go 1.10 on App Engine flexible environment.
Starting today, you can specify runtime: go1.10 in your app.yaml file to deploy your app using Go 1.10.
We will make Go 1.10 the default for deployments specifying runtime: go sometime after March 20, 2018. After Go 1.10 becomes the default, you’ll still be able to use the existing Go 1.9 runtime by specifying runtime: go1.9.
Go 1.10 speeds up builds and includes minor changes throughout the standard library. Changes to the bytes and net/url packages may require some code changes. For full details, see the Go 1.10 release page.
As always, you can submit feedback in this forum and bug reports to the issue tracker.
Vivek, for the Go team