Discovery on Steam is a growing concern for developers as there are sometimes dozens of games released in a single day. Steam's new initiative "Discovery Update" is designed to help users filter the library in a more meaningful way. This starts at the Storefront where you can now see personalised recommendations based on what you play and what your favourite curators recommend. Better search engines and system to filter games you already own have also been put in place.
"In the past nine months, over 1,300 new titles have been added to Steam. We know you can't play them all, so we've updated Steam with new features and functionality to help you discover the best new releases, the classics, and the unique indie gems you might be interested in."
For a full list of what has changed and how you can best take advantage of the changes - head over here.