See PixelSquid's plug-in for viewing and placing 3D objects straight into Photoshop.
Adobe Acquires Mixamo
Adobe have announced the acquisition of Mixamo, with plans to integrate the company's 3D technology into Photoshop.
Nondestructive Image Flattening and Reflection Removal
James Busby demonstrates nondestructive image flattening and reflection removal in Photoshop.