Starting with Magic Origins, ‘Release Notes’ focused on Two-Headed Giant are posted to supplement the regular release notes. Here's the first one!

http://blogs.magicjudges.org/2hg/magic-origins/

If you have a 2HG prerelease coming up, share this with your community or with any judges of such prereleases that do not regularly check apps/blogs but might find it helpful =)

Battle for Zendikar posted!

http://blogs.magicjudges.org/2hg/battle-for-zendikar-two-headed-giant-release-notes/

This time there's also a companion piece mostly for players about all the cards with changed functionality:

http://blogs.magicjudges.org/2hg/battle-for-zendikar-2hg-hidden-gems/

Oath of the Gatewatch:
http://blogs.magicjudges.org/2hg/oath-of-the-gatewatch-two-headed-giant-release-notes/
http://blogs.magicjudges.org/2hg/oath-of-the-gatewatch-2hg-hidden-gems/

Shadows over Innistrad:
http://blogs.magicjudges.org/2hg/shadows-over-innistrad-two-headed-giant-release-notes/
http://blogs.magicjudges.org/2hg/shadows-over-innistrad-2hg-hidden-gems/

Eldritch Moon:
http://blogs.magicjudges.org/2hg/eldritch-moon-two-headed-giant-release-notes/
http://blogs.magicjudges.org/2hg/eldritch-moon-2hg-hidden-gems/

Aether Revolt!
http://blogs.magicjudges.org/2hg/aether-revolt-two-headed-giant-release-notes/
http://blogs.magicjudges.org/2hg/aether-revolt-2hg-hidden-gems/

https://blogs.magicjudges.org/2hg/amonkhet-two-headed-giant-release-notes/
https://blogs.magicjudges.org/2hg/amonkhet-2hg-hidden-gems/

Hour of Devastation
https://blogs.magicjudges.org/2hg/hour-of-devastation-two-headed-giant-release-notes/
https://blogs.magicjudges.org/2hg/hour-of-devastation-2hg-hidden-gems/

Ixalan!

https://blogs.magicjudges.org/2hg/ixalan-two-headed-giant-release-notes/

https://blogs.magicjudges.org/2hg/ixalan-2hg-hidden-gems/

New writers for Rivals of Ixalan!

Release Notes by Alexandra Stokes: https://blogs.magicjudges.org/2hg/rivals-of-ixalan-two-headed-giant-release-notes/

Hidden Gems by Kade Goforth: https://blogs.magicjudges.org/2hg/rivals-of-ixalan-2hg-hidden-gems/

Dominaria also has a new writer =D

Release Notes by Sabrina Kool: https://blogs.magicjudges.org/2hg/dominaria-two-headed-giant-release-notes/

Hidden Gems by Kade Goforth: https://blogs.magicjudges.org/2hg/dominaria-2hg-hidden-gems/

M19:
https://blogs.magicjudges.org/2hg/m19-two-headed-giant-release-notes/
https://blogs.magicjudges.org/2hg/m19-2hg-hidden-gems/

Ravnica Allegiance:
https://blogs.magicjudges.org/2hg/archives/ravnica-allegiance-two-headed-giant-release-notes/
https://blogs.magicjudges.org/2hg/archives/ravnica-allegiance-2hg-hidden-gems/

War of the Spark!
https://blogs.magicjudges.org/2hg/war-of-the-spark-two-headed-giant-release-notes/
by Sabrina Kool

https://blogs.magicjudges.org/2hg/war-of-the-spark-2hg-hidden-gems/
by Kade Goforth

Core 2020

https://blogs.magicjudges.org/2hg/core-2020-2hg-hidden-gems/
by Kade Goforth

https://blogs.magicjudges.org/2hg/core-set-2020-2hg-release-notes/
by me