In the main Zcash network, the Sapling protocol was activated, which is necessary to perform secure transactions and increase blockchain performance.
The update is activated at block 419200. It, in particular, will reduce the time for processing transactions up to 90%, as well as significantly reduce the requirements for the amount of memory required to perform secure transactions. Sapling activation will also make it possible to use lightweight clients for secure transactions, and not just full nodes.
Immediately after activating Sapling, users of the zcashd client have access to addresses of a new type. Currently, funds cannot be transferred from protected old addresses to new ones without disclosing the amount of the transaction. This makes it possible to audit the monetary base of ZEC relating to protected addresses. The Zcash team is currently working on creating a tool to automate the movement of funds without compromising user privacy.
The Zcash blog also says that Sapling activation is essentially a “rebirth of cryptocurrency” because it takes the project a step closer to mass adoption as an open and confidential payment system.