Keying visibility of object collections with single property in 2.8?

One solution for this animation behavior with object collections is:

1. Instance to Scene the collection you want to animate.

2. Insert Keyframes to your new instance in Disable in Viewport or in Disable in Renders from the outliner.

Then you can repeat the last step in different frames (changing the visibility before add a new Keyframe)

Also note: you can not animate single objects that were in the original collection, the collection instance is treated as a single object.

You could make a link to object animation data.

First step: Keyframe single object visibility

Select one object and in Object Properties under Visibility keyframe property Show in Viewports. This can be done by hovering cursor over the checkbox and pressing i . Keyframe will be placed in your timeline to current frame. For example you can keyframe object visible at frame 0 by checking the checkbox and keyframing it and make it disappear at frame 100 by unchecking the checkbox and keyframing it.

Second step: Link other objects animation data

Select all the objects you want to keyframe and last select the object that was already keyframed. Press Ctrl + L and select Animation Data. Now all selected objects will appear and disappear at the same frame.