Looks like the 10.11.5 update fixes some of the same enterprise bugs as iOS 9.3.2, while iTunes 12.4 has a slightly refreshed UI. Here’s hoping the update also fixes some of the myriad bugs I’ve filed against iTunes 12 since it was launched, though it doesn’t appear to change the integration of Apple Music much, if at all.
Update: No word on whether iTunes 12.4 includes a fix for the disappearing media bug.
Update: iTunes 12.4 fixes a bug where the Albums view would jump back to the topmost position when selecting an album if the Recently Added section was visible. It resolves this by — get this — moving the Recently Added section out of the Albums view and into its own view. I guess that’s technically a fix.