GitHub has introduced a new feature called the blob contributions box, which is visible on every file view on the platform. This feature displays the last commit made to a file and identifies the contributors involved, providing users with an immediate sense of who is participating in a project. The contributions box aims to enhance social coding by offering a quick overview of project involvement, as highlighted by examples such as Sinatra's main.rb and Backbone.js's Gauges. This update, announced by Kyle Neath, is designed to enrich the collaborative experience on GitHub.