What's in the Emacs newcomers-presets theme?

The Emacs newcomers-presets theme is a feature that can be enabled from the splash screen or by using the M-x load-theme command followed by "newcomers-presets". This theme is designed for new users of Emacs, making it more user-friendly and intuitive. It includes various improvements such as automatic spelling checks, updated Imenu entries, smoother scrolling, line numbers in text and code buffers, dynamic updates of the system-defined font, and enhanced frame resizing capabilities.

The theme also provides better navigation options like minibuffer history, saved file locations, and completion previews. Additionally, it allows users to customize tab bars and provides features for interacting with Dired buffers. The theme aims to make Emacs more accessible to newcomers, offering an enriched experience while maintaining compatibility with existing settings and configurations.