I just blogged about this and that I would share it with you guys. Mettle has a created a plugin that allows 2D text and abstract shapes to be turned into "true" 3D right inside AE.
Generate and animate true 3D text in the AE comp window
Works on AE Shape Layers + Layer Masks
Easy 3D Deformations – Bend, Bulge & Twist
Built in particle system (the Generator)
Use 3D displacement maps + filters that ship with AE for spectacular result.
Render depth maps for use with lens blurs + products like Trapcode Particular etc.
Reflection mapping – Spherical and Cubic