Infracost v0.9.12 introduces several enhancements, including faster CLI performance and simplified output for AWS S3 and CloudFront by focusing on standard pricing options and hiding unused cost components. The release features caching of Terraform plans to accelerate CLI runs, which can be disabled using a new flag, and expands the CloudWatch data fetch to include S3, AutoScaling, and EKS node groups. The update also adds support for additional cloud resources across AWS and Azure and enhances multi-project configurations with a new environment variable parameter in config files. The JSON output now contains new fields for cost analysis, and there is an emphasis on improving CI/CD integrations, with community contributions highlighting the integration of Infracost with Terraform Cloud and pre-commit-terraform. The team encourages user feedback and participation in shaping future developments through GitHub discussions and other community channels.