According to data mined by a prominent Twitter source, Valve may be working on a streaming service called Steam Gaming Cloud. These references were spotted in the latest Steam beta. Going by the below image, it looks like the streaming service will have a free trial that limits the duration of a streaming session for a particular set of apps.

The trial duration will most likely vary from developer to developer and will reset after a certain interval. Further data shows that this might just be an integration with NVIDIA’s GeForce NOW streaming service instead of a dedicated one from Valve.
We won’t have to wait long for the official announcement. Considering that the code has already made its way into the beta version, the next few updates should shed some more light on Valve’s streaming plans.