ChainCatcher news, according to The Block, Avalanche "subnets" have been renamed to Avalanche Layer 1s (L1s). Avalanche L1s are typically application-specific blockchains that can be customized to meet the specific needs of different use cases.In addition, Avalanche has initiated a community proposal ACP-77, aimed at reforming the creation and management design of Avalanche L1s, bringing more flexibility and autonomy to Avalanche L1s validators.