the AA page on Flagship Lounges was just updated to remove JFK as a location (since the AA premium lounges were re-branded with BA to be Chelsea, Soho, Greenwich)
The page did NOT remove the "PHL coming soon." If there was widespread knowledge that PHL would never get one, they could have removed it at the same time.
Maybe we can read into it remaining there that it is still coming "eventually."
Or maybe some IT guy just got told "remove JFK" and nobody was even thinking about a PHL update.