Odaily News According to official news, the BNB Greenfield network is about to undergo a Mongolian hard fork upgrade. The testnet upgrade is expected to be carried out at block height 10,780,238 at 15:00 on July 31, and the mainnet upgrade is expected to be carried out at block height 10,314,605 at 15:00 on August 8. Officials recommend that validators and SPs upgrade to the latest version before the hard fork.