I find it really interesting to know where WordPress is headed. As an example, a student wanted to create a Website with various music and video interactions and embeds. WordPress 3.6 is being released soon and has oEmbed support for Rdio and Spotify. Keeping abreast with WordPress developments provides opportunities for Website developers such as myself.
One of the best resources for knowing where WordPress is going in the future is the annual State of the Word talk by Matt Mullenweg. Here is State of the Word 2013.