Maggief, is there a site where we can look this up?
Looks like a turn-around.
MAS in a statement said the previous flight number of MH370 for flights from Kuala Lumpur to Beijing would be revised to MH318.
Its return flight MH371 would be changed to MH319. The frequency of flights remains unchanged.
http://www.flightradar24.com/flight/mh318
http://www.flightradar24.com/flight/mh319