GitHub has enhanced the way tweets with links to its repositories appear by supporting Twitter Cards, allowing tweets to display more contextual information on Twitter.com. This update means that tweets containing GitHub repository links will now show the repository's name and owner, description, and gravatar, following the username/repo-name format. Additionally, links to GitHub Gists on Twitter are also supported, improving the overall utility and visual appeal of tweets that share code links. This enhancement reflects GitHub's appreciation for the millions of tweets that circulate links to code on its platform, aiming to make them more informative at a glance.