P: Ability to identify pictures not assigned to an album

Oh that is SO helpful, thank you Jim. Made my life much easier, appreciate the help.

Amazing! totally not obvious but great. Ideally would have a smart album for this, and so many other things, but this has saved my bacon in the shirt term :0) 

This feature was added a long time ago. 

Click on All Photos, then click in the Search bar at the top of the grid. That reveals all the searchable "facets", one of them is "Albums". Then either do as Victoria suggested in the post directly above yours, or click on the "Album" facet and scroll to the bottom of the resulting list where you will find the entry "Not in Any Album". Click on that and the grid populates with the required filtered images.

This would be SO helpful. Please add this feature.

Which platform are you using? In the Windows and Mac versions, start to type album: and select not in any album from the popup. 

Am I missing something here. New to the forum so perhaps misunderstood, but this seems to be marked as 'implemented' yet I can see no way of finding a photo NOT in an album in Lightroom CC. I rely on this for my workflow and literally can't use LR if is still not possible. Any enlightenment most welcome thanks!

When will this be implemented in the iOS version? I really need this feature badly.