We hear you: updates to Works with Nest

Last week we announced that we would stop supporting the Works with Nest (WWN) program on August 31, 2019 and transition to the Works with Google Assistant platform (WWGA). First, we’re committed to supporting the integrations you value and minimizing disruptions during this transition, so here’s our updated plan for retiring WWN:
Your existing devices and integrations will continue working with your Nest Account, however you won’t have access to new features that will be available with a Google Account. Once your WWN functionality is available on the WWGA platform you can migrate with minimal disruption from a Nest Account to a Google Account.

Source: www.blog.google