The CDK for Terraform v0.16 improves automatic conversion of configuration code from HCL to supported languages, enabling type coercion and providing better support for iterators and functions. The release enhances the conversion process by matching the type being generated from HCL with the provider schema, reducing errors caused by type mismatches. Additionally, it introduces enhanced iterators support, allowing for more accurate conversions using iterators instead of escape hatches. The update also improves the performance of CDKTF synth and get, and updates the minimum version of Node.js to 16. With these improvements, users can convert their existing Terraform HCL code to a CDKTF-compatible language automatically, making it easier to use CDK for Terraform.