PANews reported on April 18th that Polymarket Developers tweeted that the Polymarket V2 exchange upgrade will launch on April 22nd and is currently open for testing by all users. Developers using the API or client need to complete the migration before launch: upgrade SDK/API integration, use the new exchange contract address and order structure, and switch collateral to pUSD (USDC.e needs to be encapsulated as pUSD via Collateral Onramp). There will be approximately one hour of downtime during the upgrade (around 19:00 on April 22nd), during which all open limit orders will be cancelled, but funds and positions will be safe. The V1 exchange will cease operation after the migration is complete.