The current incarnation of Geth contains all the Byzantium EIPs implemented and also features the fork block number 1,700,000 which is in the next 48 hours for the Ropsten testnet transition. The block numbers for Rinkeby and the main Ethereum network will be finalized when Ropsten is deemed stable. Read details on the update on this page:
https://blog.ethereum.org/2017/09/14/geth-1-7-megara/
Track the status of the testnet: http://status.ropsten.ethereum.org/