Long awaited as one of the last key features missing from the announced X-Plane 12 feature list, the included Airbus A330 now has its proper Airbus MCDU.
MCDU for Airbus

For airliner pilots looking to get the most detailed and authentic experience, having the proper flight computer system is essential. Until now, the Airbus A330 in X-Plane 12 has made use of the Boeing FMC system, as a placeholder for the eventual addition of the Airbus MCDU.
The day is here now for those on the open beta release cycle and the MCDU takes the top billing for features added in Public Beta 12.05b1.
The latest beta also includes plenty of bug and crash fixes fixing everything from unusual temperature spikes near the tropopause to fixing an issue where MSAA anti-aliasing broke the clouds.