To provide context, yes, Frost was initially launched as a paid theme in the summer of 2021. However, upon its integration with WP Engine in December 2021, the business model shifted towards open-sourcing, making it freely accessible to users. Since then, Frost has been readily available on its official website, GitHub, and, more recently, the WordPress.org theme directory. In addition, the theme has continually evolved with enhancements in the block editor and has been regularly updated to incorporate new features and settings introduced to WordPress Core.