Zcash is a decentralized and open-source cryptocurrency that offers privacy and selective transparency of transactions. Zcash payments are published on a public blockchain, but the sender, recipient, and amount of a transaction remain private.
Beta Guide
https://github.com/zcash/zcash/wiki/Beta-Guide
Release Notes
https://github.com/zcash/zcash/blob/zc.v0.11.2.latest/doc/release-notes/release-notes-1.0.0-beta1.md
Download the Tech Beta release here
IMHO, one of the most promising coins for next year.