Polymarket Developers: Exchange upgrade will go live at 11:00 UTC on April 28 (19:00 Beijing time), with an expected downtime of approximately 1 hour

Polymarket official development account Polymarket Developers posted on X platform, stating that the exchange upgrade will go live at 11:00 UTC on April 28 (19:00 Beijing time), with an estimated downtime of about 1 hour. The V1 order book will be cleared, all open limit orders will be canceled, and funds and positions will remain secure. Users trading via API need to update to the latest SDK beforehand, and the v1 client will cease to function after the switch.