TwithcPuppy,
I saw this today on MacRumors:
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Apple today released a revised version of iTunes 12.6, which appears to eliminate a hidden option that may have accidentally been built into the software release.
Shortly after the original release of iTunes 12.6 on Tuesday, a reddit user discovered a "Show on Profile Page" toggle on a Playlist edit page.
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The toggle didn't appear to do anything because there's currently no individual profile page feature in iTunes, and now the non-functional feature has been eliminated from the 12.6 iTunes release, suggesting it was added by mistake and could be destined for some kind of future iTunes profile addition.
It is entirely unclear what a Profile Page might entail, but reddit users speculated that it could be for a future social network or a Spotify-style searchable playlist database.
The new iTunes 12.6 update can be downloaded from the Mac App Store for free. It includes a "Rent once, watch anywhere" feature that lets iTunes users watch iTunes movie rentals across all devices with the as-of-yet unreleased iOS 10.3 and tvOS 10.2 updates.
Guess this answers my question.