Just last week, Ethereum developers announced the parameters for which the Goerli merge will occur. The test is a two-step process, with the first step happening most likely today or tomorrow (August 3-4). This first step is known as Bellatrix, which is when Goerli’s Beacon Chain, Prater, upgrades in preparation for the testnet merge. Bellatrix will be completed at epoch 112,260. Once Bellatrix is activated, it will next merge with Goerli when it hits a Terminal Total Difficulty (TTD) of 10,790,000. After the two merge, Goerli will continue to run as a PoS blockchain.
Source: https://www.coindesk.com/tech/2022/08/03/goerli-is-coming-ethereums-last-rehearsal-before-the-merge/?utm_medium=referral&utm_source=rss&utm_campaign=headlines