Kaia’s Network ID will be the same as Klaytn’s.
Kaia Mainnet: 8217
Kaia Testnet Kairos: 1001
If you are planning to run a Kaia EN, the hardware requirements are the same as Klaytn’s, which you can find here.
Yes, Kaia will support batching of multiple RPC requests. The default batch limit is 3,000 but this is configurable.
Most RPCs will be the same on Kaia, except for namespace changes (i.e., klay_ to kaia_, although klay_ will remain for backwards compatibility). You will not need to abandon your current setup, and will only need to upgrade the binary to Kaia’s once it is released.
The Kaia mainnet is a hard fork of Klaytn, and not a whole new mainnet. The Klaytn mainnet will continue to operate under the new Kaia name after the rebrand.