Korean Air Skypass - JFK-ICN service in Oct- Sleeper Seats?

The Koreanair.com website has updates until 31 Aug... I'm booked on a 77W on JFK-ICN-JFK but can't figure out whether it has the new sleeper seats or not.

Expertflyer says it's operating a 773 on KE 81/82...???

Does anyone know a) what the correct aircraft is that's being used on that route and b) if they have the new seats?

Thanks!

b) If you book for 77W, you'll have new 180-degree sleeper seats (except Y class). In Oct, daily 081/082 will be 77W. a) KE operates both 77W and 773-nonER version. The nonER version does not have new seats.

KE does not fly 773's (non-ER) to JFK.