123D Design for iOS update out now! Answered
* Color! Set colors for your design. Defined colors will appear when the model is opened in 123D Design web and desktop tools.
* Dimensions. Tap on an object to display its measurements.
*Create image snapshots of your design that you can email, share, or save to your image library.
* Contextual menus appear with a long press on parts or on the canvas.
* Insert parts by dragging and dropping to the canvas, or double tap a part to drop it at the origin.
* Lock or unlock objects in the workspace.
* UI improvements and bug fixes.