As this is a really minor update, I do not plan to make a big fuzz about it on socials. Meaning:

Push to Discord / Twitter / Reddit a simple message:

OpenTTD 12.0-beta2 now available on GOG / Steam / our website.
It addresses a critical bug in 12.0-beta1 related to the improved networking support.
https://www.openttd.org/news/2021/08/19/openttd-12-0-beta2.html

On tt-forums just a post in the current topic with similar content.

On Steam, a copy of the news message with not much more to that. Most likely requires an image again, but I will tackle that when I post it.

Edit: image, and no, I got zero inspiration :P