GitHub Pages has been upgraded to support the latest version of Jekyll, an open-source static site generator, offering enhancements such as native Sass and CoffeeScript support, improved Markdown handling with Kramdown, and the ability to publish diverse document types with Collections. This update also allows the integration of JSON data into Liquid templates and introduces several time-saving features like front-matter defaults and filtering options. Users are encouraged to explore over 300 new features and changes since Jekyll version 1.5.1, with instructions provided for updating local build environments. Ben Balter, who has played a significant role in various capacities at GitHub, highlights these improvements as part of ongoing efforts to offer a more seamless and secure platform for developers worldwide.