The planned hard fork for the Ethereum network back in January was delayed due to a bug in EIP1283. The network was not hacked, but a vulnerability was discovered by auditors during pre-deployment testing. This exposed a "Re-entrancy Attack" in smart contracts updated to EIP1283, which would allow a bad actor to recall a function multiple times to withdraw funds.
Core devs have reset the deployment to block height #7280000 and will deploy the hard fork as 2 upgrades.
Phase1 :
C1 = i[(EIP145)(EIP1052)(EIP1014)(EIP1234)(EIP1283)]
Phase2:
C2 =i[(EIP145)(EIP1052)(EIP1014)(EIP1234)] - EIP1283
Phase1 will roll in order to support those who have already upgraded. Phase2 will roll back EIP1283.
The anticipated Ethereum upgrade to "Ethereum 2.0" is expected at the end of February 2019.