2024.42.12
や
2024.42.30
のアップデートが適用されないな。

as necessary
と書いてあるが、作り手のバグだろう。
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Nov 5, 2024
Game Update - Backend Updates
Completed - The scheduled maintenance has been completed.
Nov 5, 20:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 5, 16:00 UTC
Scheduled - @MTG_Arena maintenance will occur to deploy the 2024.42.30 game update, containing important backend updates. This maintenance will require matchmaking and general game downtime. For More Details:

⏲️ ~3 hour estimated deployment.
🕗 8:00 AM PT: Matchmaking is disabled.
🕘 9:00 AM PT: Game downtime begins. (Approx. 30 minutes)

🪛 9:30 AM PT: MTG Arena is available. Scheduled maintenance continues.
✅11:00 AM PT: Estimated maintenance completion time.

There are no patch notes associated with this release.
Nov 4, 22:58 UTC
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https://magicthegatheringarena.statuspage.io/