Nokia will unveil its Lumia 920 and Lumia 820 devices at a special event on Wednesday, but the company is also working on additional mid- and low-range devices. According to sources familiar with Nokia's Windows Phone plans, we're told that the company is preparing a 4.3-inch "Zeal" Windows Phone 8 device. The Zeal will be targeted towards the mid-range of Nokia's new Lumia lineup, featuring a 1.0GHz dual-core processor, 512MB of RAM, 8GB of storage, and a microSD slot.

Nokia is adopting a Zune-like design for its Zeal style we're told, with the handset using Nokia's traditional unibody design. We don't expect Nokia to unveil its Zeal device at a special Windows Phone 8 event on Wednesday, but the handset is tentatively scheduled for an early 2013 debut.