https://github.com/zcoinofficial/zcoin/wiki/Roadmap

Note that English isn't Poramin's first language and the roadmap is still a work in progress (only a few minutes old)

This is getting me excited:

Implement MTP: Merkle-tree based Proof-of-Work

Paper: https://arxiv.org/pdf/1606.03588v1.pdf

We believe MTP is the way to prevent botnets from mining while allowing normal legitimate CPUs to perform proof of work. On the verification end, it will take less time to process compared with finding proof. It is better than Equihash in term of speed following the below table, excerpt from https://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_biryukov.pdf

http://i.imgur.com/wIOdIF1.png
Update Code Base to Bitcoin Core Latest Version 1 - 2 months

Implementing TOR and i2p on wallet clients 1 - 2 months

Further optimization of Zerocoin performance 2 - 4 months

Currently, our implementation doesn't do parallel verification on spending Zerocoin transaction. Once implemented, Zerocoin spend transactionss can be sped fast and there can be more than one spending tx per block.

Implementing trustless setup in Zerocoin Protocol 6 - 12 months

Based on the academic paper, it may be possible to implement the Zerocoin protocol without a trusted setup phase. We will do further research into this, and will implement it, if it is possible.