Capacity: 121.33GB
Available: 106.53GB
Note this isn't exactly fresh startup. It is first boot, but on first boot there are updates for iPhoto, GarageBand and iMove which I just installed. I've done nothing else yet. That's space after initial updates.
oh and if not obvious. My MBA arrived!
Capacity from first boot
Macintosh HD:
Capacity: 120.47 GB (120,473,067,520 bytes)
Available: 106.87 GB (106,866,282,496 bytes)
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Looks like I got the Samsung drive and LG display
Capacity: 121.33 GB (121,332,826,112 bytes)
Model: APPLE SSD SM128C
LP116WH4-TJA3
Color LCD