The Uniswap v3 smart contracts will be deployed to the Ropsten, Rinkeby, Kovan, and Görli testnets in the coming days, giving developers time to begin experimenting with the protocol before the official launch.
The Uniswap v3 Core repository contains the essential, low-level smart contracts that power the protocol.
The Uniswap v3 Periphery repository contains a collection of smart contracts designed to ease user interaction with core contracts.
A liquidity provider migration portal will be available at launch, allowing v2 LPs to seamlessly transfer their liquidity to the new protocol.