Twelve South’s BookBook for the iPhone is arguably one of the most popular cases on the market today. Not only does it hold the handset, but it has a built-in wallet.

Jeff reviewed the original BookBook case for us last fall, calling it one of his favorite iPhone accessories. But up until now, the cover has only been available in brown…

Due to popular demand, Twelve South has decided to re-release its popular BookBook iPhone case in “Classic Black.” Here’s an excerpt from the press release:

“Twelve South is pleased to unveil a Classic Black version of its best-selling BookBook for iPhone 4/4S as well as a refreshed Vintage Brown version. Like the original, the new black version of BookBook marries a wallet with an iPhone case, creating one must-have accessory.”

For all of you folks that always said that you’d buy a BookBook case if it was ever offered in black, here you go. The new Classic Black version is compatible with the iPhone 4 and 4S, and is available in online for $59.99.

It iss worth noting, however, that a new, larger iPhone is expected to drop sometime in the next few months. So keep that in mind while purchasing.

Are you going to be buying the new BookBook case?