Where can I find remaining time for preview render completion in 2.8? In 2.79, running a preview render would let me see how long it would take for me to complete a certain number of samples. This was useful for me as I would often times set my preview samples to a number that is approximately equal to how long I'll be away from the computer for, or for me to gauge how long a particular scene might render on a certain sample setting.

Now in 2.8, I only see this:



How do I get back that indicator?
Change the way the render will be displayed in Render (Blender's header) > Display Mode > Image Editor. 



Render again. Now see if a status bar appears inside Image Editor with the information you need.









To preview in Render Preview (Rendered Viewport Shading), enable Overlays and check the Text Info checkbox. Now the remaining samples will probably appear.