Unichain, the layer-2 chain run by Uniswap, is changing its technical foundation. The testnet migrates on October 13, 2026, with the mainnet following on October 29. For your balance on the chain, Uniswap says this means nothing at all. Chain ID, contracts, balances and applications stay the same, and Uniswap v2, v3 and v4 keep running as before. What changes is the operation behind the scenes, and that is the part that concerns you as a holder.
Uniswap announced the move on its own blog on October 9, 2026. The stated goal is native interoperability across the OP Stack: transfers between Unichain and other chains built from that toolkit should eventually work without a separate bridge, starting with Ether. Meanwhile the Uniswap price is under pressure. UNI trades at $7.34 on October 12, 2026, down 6.3 percent over 24 hours and 18.1 percent over seven days.
What Uniswap has announced for October 13 and October 29
The announcement is short and names two dates. The Unichain testnet migrates on October 13. The mainnet follows on October 29. That leaves a little over two weeks in which the switch runs on the testnet only, the sandbox wh...
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