Polkadot officially announced that its issuance model upgrade will officially launch on March 14 (Pi Day). This protocol change primarily introduces two core measures: first, establishing a maximum supply cap of 2.1 billion DOT (approximately 80% of which has been issued); second, reducing DOT's emission rate by approximately 53% starting March 14, with plans for further reductions in the future. The official statement indicates that these changes were proposed by the community and approved by OpenGov, aimed at constraining long-term issuance, maintaining incentive mechanisms, and providing a transparent and predictable issuance schedule.