Currently the 346 is scheduled to debut on the HKG-LAX route on 02JAN03 on CX880 on tuesdays, thursdays and fridays, with returns on the same day as CX881.
Rows 1-2 are F, 11-21 J, and 30-67 Y.
Even though the flight is already on sale, the website is not updated with a seatmap.