I flew Polaris on the 777-300 on 4/25, SFO-FRA this year, flight UA58.

Looking at another flight on 4/23/19, again on UA58 but this time, that is a 777-200 so no Polaris seats but the dreaded 2-4-2 layout in J.

In fact the other non stop on that date is also a 777-200.

Why would they switch from a Polaris cabin on this route next year?

Are they expecting to have the 777-200s all converted to Polaris seating by next April?