The Ethereum Classic ecosystem is discussing about upcoming hardfork, called Atlantis.

It’s been a while since the last update from Ethereum Classic, which was related to the 51% attack happened to the network earlier this year.
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The ETC ecosystem is having an ongoing discussion regarding the proposed changes as specified in ECIP-1054.
Named after one of the oceans, the Atlantic hardfork is proposed by the ETC developers and consists of 6 major changes, as below:
1. Spurious Dragon state-trie clearing.
2. Spurious Dragon contract-code size limit.
3. Byzantium EVM opcodes, namely REVERT, RETURNDATASIZE, RETURNDATACOPY, and STATICCALL.
4. Byzantium EVM precompiled contracts, namely addition and scalar multiplication on the elliptic curve alt_bn128, optimal ate pairing check on the elliptic curve alt_bn128, and BIGINT modular exponentiation.
5. Replacing the intermediate state root field in transaction receipts with the contract return status.
While the discussion will still take place in the upcoming days, even months, the first discussion, which was conducted on April 6th and attended by representatives from several core dev teams, mining operations, node operators and other ETC ecosystem participants managed to agree to most of the proposed changes, except the state-trie clearing.
“It will be discussed further with more analysis as described above,” the announcement wrote about the pending state-trie clearing.