But this morning, when we checked on the iPad mini in black, Apple says it's still shipping on November 2, which is the release day. In other words, plenty of black iPad minis in stock.
Additionally, the new fourth generation iPad in white and black is shipping on November 2, so it's in stock, too.
It's still early, so it's hard to read too much into any of this. But, Apple's new product launches usually lead to stories about immediate sell outs, long lines, and huge demand. That doesn't seem to be the case with the iPad mini, or the fourth generation iPad.