The "mystery buyer" of 100 A320 appears to be Air China and Shenzen. Compare the numbers that Airbus reports to the numbers when the upcoming order was announced back in May.
I have no clue however who is the unidentified customer for the 20 A320neo. Loong was reported to have ordered 20 A320 at the end of December, but this should be a mix of 11 A320ceo and 9 A320neo and this order is missing in the 2013 table.
There are quite a few A320ceo&neo orders to be firmed up in 2014:
- VietJet for 20 ceo and 42 neo
- Qingdao for 5 ceo and 18 neo
- Spring for 30 ceo
- Lybian Wings for 4 neo
- Hong Kong Aviation for 60 neo
- CASC for 42 ceo (but that could disappear now that individual chinese airlines place orders themselves)
- Doric for 20 A380
- Chinese airlines for some more A330
An announcement to increase production for the A320ceo before production ends and for the A320neo to a range of about 50 per month seems to be inevitable and we should expect it soon.
The possibility of a A330neo was downplayed by Airbus officials yesterday. It would be just one option and not the main one...of course they have to downplay the possibility as long as possible as they have to protect sales of the existing model. But I would not be surprised if we would see a move in the first half of the year.