With promises to deliver in January, and reassurances that it was on it's way through Apple's testing processes, Magic: The Gathering Toolbox is now populating in iTunes! The screencap to the right is from my iPhone, so keep checking and the official launch information will be posted through the official Wizards Magic twitter account!
(As a reminder, there was no word on when an Android release would be expected other than "a bit after" the iOS launch Follow the aforementioned @wizards_magic account for up-to-date information!)
Update: You can read awesome Wizard and R&D member Dave Guskin break down the toolkit here!