Polymarket Developers: The exchange upgrade will go live at 19:00 Beijing time on April 28, with an expected downtime of approximately 1 hour

Odaily Planet Daily News: Polymarket's official development account, Polymarket Developers, announced on the X platform that the exchange upgrade will be launched at 11:00 UTC (19:00 Beijing time on April 28). The upgrade is expected to cause a downtime of approximately 1 hour. The V1 order book will be cleared, and all open limit orders will be canceled. Funds and positions will remain secure. Users trading via the API need to update to the latest SDK before this time, as the v1 client will cease to function after the switch.