Posted some spyshots earlier in the week of the JetBlue “retro” scheme. Here’s an official photo.
JetBlue has more backstory here:
JetBlue tells me the interior is standard JetBlue but there are retro style uniforms today and 60s-style amenity kits on the JFK-PSP service today.
If you are in NYC, they’ve also got a pop-up “Time Travel Agency” in NYC, offering 1960s flight prices: