The document discusses new features in HTML5 including: 1. New semantic HTML5 elements like <header>, <nav>, <section>, <article>, and <footer> that help structure and provide meaning to content. 2. New attributes like "role", "data-", "aria-", "draggable", and microdata attributes that add more semantics and meaning. 3. New form input types like email, number, date, time, etc. and new form attributes that make forms more usable.