Singapore Airlines has pulled the wraps off its biggest cabin overhaul yet, showing off all-new first and business class seats at Marina Bay Sands in Singapore. The programme carries a price tag of more than S$2 billion (around US$1.5 billion) and will roll out from the second half of next year, starting with the incoming Boeing 777-9 fleet and stretching across 41 Airbus A350-900s — both the standard long-haul jets and the ultra-long-range ULR variants.

The headline-grabber is first class, designed with PriestmanGoode and built by Collins Aerospace. Each 777-9 gets six seats behind floor-to-ceiling doors, in the traditional Singapore Airlines design language. The two centre seats can be synchronised and merged into what the airline calls the largest double bed in commercial aviation: 80 inches long and 60 inches wide. If you don't know your neighbour, a full-height divider splits them apart. Face-to-face dining is possible at every seat, with room for four around the centre pair. Specs elsewhere: 89.5-inch pitch, 23-inch seats that widen to 30 inches with armrests down, and a 32-inch 4K screen.

Business class is the bigger surprise. Created with BMW's Design Works and RECARO, it ditches the famous Batik-inspired colours for a new look — one seat pattern nods to NASA's Juno satellite. It's the airline's first business class with doors, and every seat faces forward for work, dining and sleep. Practical touches include a dedicated laptop slot during meal service. Select seats convert into double beds measuring 79 by 24 inches with memory foam bedding. Configurations vary: 54 business seats on the 777-9, 70 on the A350-900ULR and 42 on the standard long-range A350, all in a 1-2-1 layout with 20- or 22-inch 4K screens and plenty of USB charging.

Two caveats worth knowing. First, the ultra-long-range A350s will carry first class for the first time, meaning the Singapore–New York nonstop — the world's longest flight — will finally offer a first-class option. Second, the retrofit stops there: the A380, 777-300s and the rest of the fleet keep existing cabins, so which aircraft you fly matters more than ever.

For anyone booking long-haul premium cabins, this shakes up the leaderboard. The 777-9 deliveries and A350 retrofits are the aircraft to hunt for when booking SIN routes from late next year, and awards chart fans should watch for ULR first-class redemptions to New York. Anyone flying on older A380s or 777-300s shouldn't expect the new product yet.