Alongside sharding and a new programming language, Zilliqa offers some upgrades in the mining and voting protocols as well. PoW is only used to establish and perform sharding, which reduces the computational burden of each transaction and reduces the possibility of the network being exposed to a Sybil attack. Consensus reaching is handled through Practical Byzantine Fault Tolerance (PBFT), as opposed to other blockchains which rely on PoW algorithms for both mining and consensus achievement.
Zilliqa team is currently working on the Q2 testnet 2.0 launch with smart contracts alpha (beta will be released in Q3). After that comes the actual mainnet launch which should be ready for the Q3 of 2018. Anchor dApps are planned for Q4 with a 5 million USD grant to motivate developers and further work on privacy, interoperability and storage solutions (one of the biggest issues with sharding is the amount of disk space required for it to function) in 2019.
Meanwhile, preparations are being made to create a solid user base at launch by acquiring valuable partnerships and investor support. Trading volume is on a constant rise as more and more exchange platforms keep adding the coin. Venture capital interest seems to be continually evolving and rising as well.