If MAB can find a buyer for its A380s they would soon leave the fleet.
Alright, so their could be changes over the next few years but it was widely reported last month that the A350s will takeover from the routes (currently only London) now served by the A380.
CX and SIA do offer fully flat beds on some regional routes. Much depends on the plane type and the route.
For example, SIA provides fully flat beds on those Singapore-Tokyo or Singapore-Hong Kong flights served by A380s or B777-300ERs.
It’s the same in the case of Australia. Whereas some flights to Sydney or Melbourne are operated by the above aircraft types some are flown by other plane types. This especially applies in the case of flights to Perth, Adelaide and Brisbane.
Some regional and Australian flights are flown by A330s which are configured 2-2-2 with angled lie-flat seating.