Vita preorders started in Japan. Was sold out within 2 hours, apparently. The GAF thread has a bunch of information.
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"Lengthy late night lines form at major retailers as Sony makes its debut on the portable game scene with the PSP. Famitsu does a head count at the Bic Camera in Ikebukuro and determines that about 1,200 people have lined up.
November 10, 2006. Lengthy late night lines form at major retailers as Sony releases the PlayStation 3. Gigazine does a head count at an Osaka Yodobashi Camera and determines that about 1,200 people have lined up.
Today, 2011. Lengthy lines form at major retailers as Sony begins pre-orders for PlayStation Vita. Nikkei does a count at Akihabara's Yodobashi Camera and determines that about 1,200 people in line.
Three systems, 1,200 people. Coincidence? Or evidence of a Force ala Star Wars?
Actually, I'm just wondering how Famitsu estimated 500 people for the Yodobashi line while Nikkei estimated 1,200. Since Nikkei is known for its coverage of the economy, I'll go with their count. (For the record, Mainichi Entertainment says its 700)."
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Just so people know. Those 1200 numbers were actual HW launches for PSP/PS3. PSVita has 1200 people there on the first day of preorders alone.