Yes it's 10000 vehicles, however the home charger rebate says it expired in Dec '13.
I just got my plate and you are safe to wait, GVAD approx 500, so a rough guess they have sold 3500 electric vehicles. When you start seeing GVAH plates then you know your time is limited.
If you are using the online calculator to price out the leaf put 8500 in for the deposit and it will calculate it properly for purchase. For lease you have to take the 13% off, $7522 since on a lease you have to pay 13% tax on your downpayment at the time you take delivery, then pay tax on the payment every month. For purchase financing you get the final bill, all taxes then take the downpayment off and finance the rest (so you pay interest on financing the tax which you don't with a lease).
FYI I am paying $437 a month after tax 0 down for a 2015 sv pearl white for a 4 year 25000km/year lease, I don't see it advertised but when I signed the dealer told me that between my deal and delivery Nissan was offering $2500 rebate on cash deals and they made me sign that I knew about it but low payments were more important to me than a lower overall price as my wife may take 2 maternatiy leaves during the ownership of the leaf.
On a side note the Green plate HOV trial is listed till spring/summer of 2015 (not sure of the exact date), however with the low numbers I would be surpirsed if they don't extend it.