in July 27 2003. But they are standard 73Gs
In the link Stitch
has provided, you'll note that these 737-700ERs are two of the order placed in July 2003 converted to this model so their total 737NG family commitment remains at 45. But they are the launch customer for the 737-700ER.
IMO, not for ANA. As for JAL, yes as they stated an interest in the 739ER when they placed their order, some of their options are for the model, as they are focussing on smaller airplanes as they consolidate I'd say we might well see a 739ER order from JAL but not from ANA.