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Here you go:

https://discord.gg/yYNfUxJ

Here's the update

https://magic.wizards.com/en/articles/archive/magic-online/magic-online-mid-year-update-2018-07-31

TLDR:
1) They're aware that cards from supplemental sets aren't getting...

That is very different from "major announcement" and the sky is falling perception in the original post.

I had the same thought and I've got your back. I just launched this last night:

http://www.mtgstreams.com/

direct link to what you want:
http://www.mtgstreams.com/streams/legacy


Also...