I just wanted to add too that it’s more a replacement for the old Blender Internal render engine. I think it’s also important as a tool for game asset look dev. It’s really good at showing exactly how the asset will actually look in game which is the best case scenario for that kind of work. It’s funny because a lot of other apps have been trying to have a Real-time mode for game dev but Blender seems to be way ahead of the curve here.
There’s also the potential for using this as a renderer for quick turn around content like animated TV/Web shows or little vignettes. Basically the animator previews could practically be used as final quality content. Another idea too is to just keep the animations as real-time content on platforms like Sketchfab. Now, that you can upload animated content, it kind of changes a lot of delivery options.
And lastly, once we have better support for VR/Head Mounted Displays (HMD) Eevee has a lot of potential for VR content creation. So as you can see, there’s a lot of potential here for new types of content to be utilized/created with Eevee. Cycles will still be the way to go for high quality content output. Things like VFX for film and TV or feature quality animation should still be rendered with it. The best you will get out of Eevee is whatever the current crop of game engines can produce. Which it pretty good now-a-days but not really meant to compete with photorealistic film work.