I ordered mine on May 25. Kingwa said it was the last usb Sparrow they had in stock, so I went ahead and ordered it. But he said they would be back in stock in about 2 weeks. I didn't wait for those new ones cuz it was my b-day gift for myself:)
It shouldn't be long till they are back in stock or they are in stock already cuz the out of stock notice has gone for a week now from their website.