I just booked into D as well, YYZ-ICN-DPS, and i've got a few KE question for you guy.

How do i know for sure if my flight is on a newly configured aircraft? Is the seat map a good indication, the first class seat map on my YYZ-ICN-YYZ plane only has two rows of four seats.

Also, my ICN-DPS flight is on a 330, but i was given seats 2GH, dose that mean its in first?

and Lastly, would i be able to use the first class lounge, with a D class reservation?