The reality of the slot swap, and US airline consolidation in general, is that major airline services are becoming more homogenous from the largest markets.
The Aerion AS2, known as the "Concorde of Business Jets," has been bolstered by an order of 20 aircraft from FlexJet which was announced at NBAA in Las Vegas recently.
In response to cardholder feedback, the new lounges offer an experience similar to the one AmEx offered in its previous partnership with American Airlines.