It is optimised to need less fuel. Batteries won't work for big passenger aircraft, so something like the CFM RISE is the next best thing. At least 15 percent less fuel. Plus a new "gull" wing with provisions for even larger diameter engines and possibly moving outer wings, lightweight CFRP-fuselage with wide diameter in the back. Sounds reasonable. I wonder how many seats they install in the cockpit? The funny windows might intend to give some clue?
Anyway, so much better than hydrogen fantasies.