JetBlue unveiled its new domestic first-class seat with more space, Bluetooth, and customizable cocktails. Take a look.

JetBlue unveiled its new first-class seat. JetBlue Airways JetBlue Airways' new first-class seat, BlueFirst, will start flying later this year. The large recliner sports the usual premium perks, like priority boarding and more legroom. Passengers can use the seatback's "Mixologist Mode" to order custom alcoholic drinks. JetBlue Airways is doubling down on premium, and its planes are about to look very different. On Tuesday, the airline officially unveiled the details of its highly anticipated…