The Zcash community has proposed the NU8 upgrade plan, which aims to increase the block limit to 8 MB and introduce quantum-resistant technology.

On November 10 that, according to the Zcash community governance forum, developer ValarDragon has proposed an initial roadmap for the NU8 network upgrade, targeted for implementation in late January 2027. The plan primarily includes launching the Tachyon privacy pool, increasing the maximum block size from 2 MB to 8 MB, and introducing quantum-resistant transparent transaction opcodes based on SPHINCS.

The proposal also outlines plans to incorporate a scalable transaction format, adjust the NSM reallocation timeline, and specify when the Sapling privacy pool will cease accepting new deposits, while retaining transaction and withdrawal functionality.

According to the developers, combining Tachyon with block expansion is expected to boost private transaction throughput to 200 transactions per second, while further enhancing the network's quantum-resistant capabilities. The upgrades are currently under community discussion, with specific implementation details and schedules yet to be determined.