Just under 2 years ago, Singapore Airlines announced the purchase of 20 B777-9 aircraft that are due for delivery in the 2021/2022 financial year. The B777-9 aircraft are slated to replace the older B777-300ER aircraft.
However, due to some production delays, the aircraft will only make its maiden flight around the end of January 2020 at the earliest. This has prompted Singapore Airlines to update its projection of the B777-9’s entry into service to 2022 instead.
CEO of Singapore Airlines Goh Choon Phong previously mentioned that the airline is working on a new First Class product that would set a new industry standard when launched. Hopefully, this does not preclude some possible enhancements to other classes of travel as well.
As reported by the Executive Traveller, Boeing is confident that the B777X can assume the flagship status currently held by the B777-300ER.

Much has gone into the design of cabin interiors, including better overhead bins, larger windows at an optimum height, optional electronic window shades, improved wall insulation, and a lower cabin altitude.

It remains to be seen what Singapore Airlines can do to capitalise on these new design features to roll out industry leading cabin products on their B777-9 aircraft.