From the CX website:

Cathay Pacific and Dragonair will be upgrading our reservation systems in mid-February in order to ensure that we keep pace with our passengers’ travel requirements in the years to come.

During the period of system change, interim solutions will be put in place to minimise any impact to our passengers. We seek your understanding and patience for any inconvenience you may experience during the upgrade.

We will be providing more details in the coming weeks.

Does anyone know, or would like to speculate what the upgrade will entail (before they provide all the details!)
Is this just a simple IT upgrade or a radical overhaul of how reservations are made and processed? Will this impact award redemptions? Or is it just a bit of tinkering to ensure that passengers requests for meals/seats etc are processed in a more efficient manner?