As I understand twitch was removed from 4.6 due to the removal of the api for oembed.

From the research ive done it is possible to do embeds again
https://dev.twitch.tv/docs/embed/everything

And I'd love to see this return for myself and other communities.

Same here! 😃

I've tagged the dev team to review this topic. (It maybe a bit before one is able to do so, however.)

1 hour ago, Mark H said:

I've tagged the dev team to review this topic. (It maybe a bit before one is able to do so, however.)

Great! Thanks Mark, that's all we can ask. 😃

I've asked the devs about this, and the method for embedding with Twitch has changed, enough so this isn't a matter of simply adding back some code or reenabling some settings. it's something which would have to be rewritten.

We've moved the topic to the Feature Suggestions section, for consideration in a future release.