According to official news, the Polkadot community has passed the WFC (Wish For Change) 1139 proposal, which sets the number of new DOT tokens to be added each year at 120 million. Of these, 15% will go into the treasury and 85% will be used as staking rewards. After implementation, the inflation rate of DOT will drop from 10% to 8%, and will gradually decrease in the future.