[Release automation] P2 posts & Slack

[jbordonado]

Description

• Release Thread
• Call for testing post
• woo-deployments post
• Slack announcements

We could pick the content from the draft (pattern) post and schedule the post to be published. It can then be modified later if needed.
Can we otherwise work out something with a TextExpander snippet to keep it easier?

To be explored.

The What's new post would be out of scope.

Acceptance criteria

• P2 posts are published at the right time and in the right format
• Slack announcements are published at the right time and in the right format
• etc.

Designs

Testing instructions

1. Go to '…'
2. Click on '…'
3. Scroll down to '…'
4. Observe expected behaviour

Dev notes

I spotted an example of extension command in woorelease to generate a P2 post (in this case, for WooCommerce Release Candidate): https://github.com/woocommerce/woorelease-extensions/blob/trunk/class-woocommerce-dev-rc-post.php

There's also a recent effort to automate a post to woodeployments: https://heisenmattic.wordpress.com/2022/09/28/automating-woodeployment-p2/#comment-653

Additional context