I have looked again. It's bothering me because I just don't remember where I saw the schedule. I do know it was in conjunction with LAN's sponsorship of the Nasdaq-100 because the company was going to be setting up a display of the premium business class. Whatever I read, there was a schedule laid out indicating the order and time frame that the seats would be rolled out. IIRC, first was Los Angeles, then was Miami, third was Mexico City and Brazil, and last was New York. The article also mentioned F was being kept on the transatlantic and transpacific routes. Maybe some muckety muck caught wind that a marketing guy published the schedule and redacted it after coming to their senses. I have been in SA enough to know that deadlines are often suggestions, but they are marketing this to people to whom deadlines are taken more literally.

I recall LAN expected LAX to be changed in June. MIA, MEX and SAO/RIO were some time after. New York was in December. I didn't pay much mind to it since I am grounded and won't be flying to SA any time soon. The next trip I take to SA will almost certainly be on the new configuration, irrespective of the class.

Incidentally, LAN is also upgrading coach and ordered a few more B767s. Seems that they are trying to make Lan Argentina work, so I wouldn't be surprised if they did a lot of intra-SA rotations in the future, thereby making it even more difficult to predict aircraft. Finally, LAN was scheduled to take delivery on a new, newly-configured 767 in March. If they are able to get an old version reconfigured by June (which doesn't seem unbelievable) then the timetable of the article would be accurate since you only need two planes fto update the LAX route.

Bottom line is, who knows at this point. But what I read indicates you're more likely to get the F class on the NYC route. However, from the increasing reports of recent service cuts in F on the NA routes, I probably wouldn't make getting the F class a huge priority anymore. Just my two pesos.

Now after all that, there is no way I would downgrade to D on the whole journey if you can afford the price difference. Although 11 of your 20 segments are in business or in the same class irrespective of whether you do D or A (assuming the LA segments are in the new configuration), the remaining 9 segments still constitute about 60% of your trip. Although brilliant minds will differ, I felt that there was a fairly significant difference in service between F and J on BA, CX, and QF, and there is a *world* of difference between F and J on AA 777 longhaul. Not so much on the coffins, but especially on the suites.