I had to wait until I had confirmation from the operators, and unfortunately they were busy travelling in Asia.
Alex LZ4AX (https://www NULL.qrz NULL.com/db/LZ4AX) and his fiancée were operating in central Vietnam as 3W3XX and 3W3DAY respectively. Operation was around IARU HF contest dates but it was more a tourist trip with a radio than a DXpedition. They nonetheless managed to log more than 1300 QSOs.
No QSL information by now, but you can contact him via homecall.
XV4Y will be the HQ station for the VARC during the 2013 IARU HF Championship this week-end.
Entry will be as Single Operator Low Power station.
Mode will be mainly CW, and bands 20 meters, 15 meters and 40 meters.
During next week-end you should expect at least two stations from Viet-Nam active during the SSB CQ WPX contest. XV2RZ should continue with its contesting tradition as it warmed up during last week-end Russian DX Contest. XV4Y will have limited spare time but will try to give points to as many friends as possible.
Good condx on 10m this winter could lead to an interesting ARRL 10 meter contest this year. XV2RZ and XV1X should be active this week end as should be XV4Y and XV9DX but with limited on air time.
Next week-end will see participants from all over the world run in the AA DX Contest organized by JARL. You can expect stations from Vietnam to be active like last years.
As always, XV1X should be the major station. Also listen to XV4Y on 10m and 80m as he may have some spare time for a few QSOs.