Malaysia Airlines will be receiving its first A350 very shortly. In preparation for the long haul deployment of the aircraft, Malaysia Airlines will be using the aircraft on several intra-Asia routes.
Specifically, the A350 aircraft will be deployed between Singapore and Kuala Lumpur on flights MH616 and MH613 on the outbound and inbound sectors respectively.

Seats are being snapped up as of now. It is interesting to note that you’ll have access to the First Class seats, even if you have selected Business in your search window. These First Class seats are of course available on a first-come-first-serve basis.

In any case, the Business Class seats are pretty awesome. So for S$300 per way, its a steal!