Pi Network's native token, PI, has surged over 7% to trade above $0.19, following a recent correction that saw its value drop by nearly 50%. This rebound comes as the network prepares for a significant protocol upgrade. Earlier in March, PI's price rose from under $0.175 to over $0.23, driven by anticipation of protocol updates and its listing on Kraken, which initially pushed the token to a five-month high of nearly $0.30. The upcoming protocol update, v21, follows the successful implementation of version 20, which introduced smart contract capabilities. The Pi Network team has urged node operators to update their systems in preparation for the new upgrade. Meanwhile, PiScan data indicates that the average number of tokens to be unlocked next month is below 5.5 million, with a notable release of 16 million coins scheduled for today, March 20.