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823% from all time low
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Optimism to Launch Superchain Upgrade 16a on October 2

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Optimism deploys Superchain Upgrade 16a on Oct 2 on Superchain Mainnet, subject to governance approval. The upgrade is designed to improve network stability and flexibility, completing the transition from U16.

Event date: October 2, 2025 UTC
Optimism
@optimismFND
Pending governance approval, Superchain Upgrade 16a will be proposed for execution soon:

📍 sep 22 → Superchain Sepolia
📍 Oct 2 → Superchain Mainnet

This is a maintenance upgrade replacing U16 with a safer, more flexible approach.

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OP Price Changes After Event Publication
0.15%
1 day
40.52%
Now (Added 1 month ago)
The event is about to begin
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Added by Alika
Sep 21 20:50 (UTC)
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