I have used Lauda (always will be to me) many times between Europe and Aus and its always good. If it is being killed of it must be in some kind of Star Alliance deal between SQ, LH and AU.
I only say this because sometimes up to half of the Aus bound pax are transfers from numerous AU & LH feeds in to VIE on LH ticket stock.
This being the case I very much doubt the rumour
