In the coming weeks, Valve is going to release two new mobile Steam apps that will "extend Steam's suite of services and accessibility." The first of the two new apps will focus on bringing the Steam library of games to your mobile platform of choice, provided those include Android or iOS. The second app will be an app dedicated to bringing the Steam library of movies and TV shows directly to your mobile device.
The Steam Link app, slated to launch the week of May 21st, allows gamers to experience their Steam library of games on their Android (phone, tablet, TV) and iOS-based (iPhone, iPad, Apple TV) devices while connected via 5Ghz network or wired Ethernet to a host system (Mac or PC), with Android access initially offered in beta. The Steam Link App will feature support for the Steam Controller, MFI controllers, and more across both platforms.

Later this summer, the Steam Video app is targeted for release, allowing users to enjoy the thousands of movies and shows available on Steam directly via their Android and iOS devices over Wi-Fi or LTE. In direct response to customer feedback, it will offer the ability to enjoy content in offline and streaming modes.

As noted, the first app will be the Steam Link and we will see it arrive on May 21. Just note that this Steam Link is not the same as this Steam Link but the functionality sounds to be the same core idea. We do not yet have a definitive release date for the Steam Video app, nor do we have any idea what these apps look like just yet.