According to Odaily, Kaia has officially announced the launch of its first formal version, Kaia v1.0.0, also known as 'Kairos'. This testnet is a significant development in the Kaia chain. The Kaia network has initially transitioned through a hard fork from the Klaytn network.

The introduction of 'Kairos' marks a significant milestone for Kaia, as it represents the first formal version of the Kaia chain. This development is expected to bring about significant changes and improvements to the network.

The transition of the Kaia network was achieved through a hard fork from the Klaytn network. This process is a common method used in blockchain technology to create a new version of the software. It involves a radical change to the protocol, making previously invalid blocks and transactions valid or vice-versa.

Further details about the new features and improvements in the Kaia v1.0.0 'Kairos' are yet to be released. The community is eagerly awaiting more information about this significant development in the Kaia network.