As expected, the A346s are staying a bit longer to cover for the loss of these 2 aircraft. A346 now confirmed for one daily JFK (LH400/401), one daily IAD (LH418/419) and the daily RUH DMM throughout NS26:
https://www.aeroroutes.com/eng/251218-lhns26inc
That means LH will need at least four A346 frames through the end of October.