The Budget Operating Plan (BOP) is revised at least once a year. However, during 2008-09 there must have been at least 3-4 due to the collapse of the market and the subsequent scrambling to cut costs. I believe that the yearly BOP is done in the 4th quarter of the current year for the following year. The way us line schmucks find out about it....the DFO will have a weekly update that will mention things that matter to us, like growth (in terms of %), number of upgrades (CN and FO), new airplanes, new destinations, etc.
If CX do manage to order new airplanes, watch the announcement. The CEO will make statements about what the new airplanes are intended for, ie. growth v. replacement of older airframes. Keep in mind that the passenger -400s are getting old and tired, but they are paid for...with the exception of a few on lease.
FO