About 9,094 ZEC was transferred out on Sunday, with approximately $16 million worth of ZEC still remaining in the Zcash Sprout pool

Odaily reports: Zcash plans to carry out the NU7 network upgrade on Thursday evening, at which point it will stop accepting version 4 transactions, the only type currently usable for transferring funds out of the Sprout privacy pool. After the upgrade, any ZEC still remaining in the pool will no longer be transferable; as of Thursday morning, about 12,226 ZEC remained in the pool, worth approximately $16 million, with about 9,094 transferred out on Sunday. The upgrade is expected to activate at block height 3,543,405, estimated at around 9:30 p.m. Eastern Time on Thursday based on the current block production rate; if miners produce blocks more slowly, it may be delayed to Friday during Asian hours.