The protocol for trading everything
V2 Key Points
New smart contract architecture; seamlessly support new token standards. Support for ERC-721 at launch
More efficient order matching and cross-relayer arbitrage
Support for new signature types and custom verification logic
Open source framework for “forwarding contracts.” Easy user on-boarding, abstraction of WETH, and trade widget support.
Ability to create “filter contracts” for permissioned liquidity pools
Bulk order cancellations with a fixed sized transaction
Projected launch: late July, 2018
Ecosystem Development To Date
The first versions of the smart contracts that implement the 0x protocol were deployed to the Ethereum mainnet in August 2017. Since then, the 0x core team has been shocked by the positive response from the community. There are currently fifteen 0x relayers facilitating ERC-20 token trades on mainnet, with more in beta, as well as teams like dY/dX and Set building their own complementary protocols for exchanging new kinds of assets like financial derivatives and token baskets.
What’s New in V2
Support for EIP-712
Taker Abstraction
Launch Timeline
Relayer Upgrade Process
User Upgrade Process
https://blog.0xproject.com/introducing-0x-protocol-v2-9f5bda04d38d
0x always evolves and continues to grow. I think the best project of the market.