Just got the confirmation that LH 171 BER-FRA is on the A380 for the opening of the new Berlin airport that day. Flight leaves very early that day. Scheduled time is 5:20 a.m., arrival at FRA is 6:35. Expertflyer shows all classes as 0 at the moment. But If you have status with LH you could try to waitlist. The seatmap for eco is almost empty, so I guess there is a chance to still get a seat for this flight. F cabin seems not to be open for bookings.