Electric Coin Company, the developer behind Zcash, has released its roadmap for the fourth quarter, focusing on privacy and security improvements. The updates include the introduction of temporary transparent addresses to enhance user privacy and the implementation of transparent address rotation upon receiving funds. Additionally, the roadmap outlines support for Keystone device resynchronization and disconnection for Zashi-Keystone users, as well as P2SH multisignature support in Keystone to bolster the security of the Zcash development fund.