Here is a list of the Beta 3.0 improvements and bug fixes we have made:

• Constraint masking implemented (To learn more checkout the Mask Information Page.)
• Joints are fully supported.
• ikHandles can now be constrained.
• Namespaces are now supported.
• Drag selecting in the timeline now keeps the selection.
• Keyframing works now when selected objects include constrained and non-constrained objects.
• Keyframing now works even if multiple esc constraints are in the scene.
• Animation curves of nodes attached to an exoSwitch constraint now behave in a more standard manner in the graph Editor.
  
• Animation ticks are now visible in the timeline.
  
• Animated nodes that are constrained to an exoSwitch constraint now display properly in the Dope Sheet.
  
• Undo after creating an exoSwitch constraint doesn't crash Maya anymore.
• Redoing a constraint creation now works as expected.
  
• If a curve node is deleted extra data doesn't get left behind anymore in the exoSwitch constraint.
  
• The Blend Switch attribute creation is now properly managed on undo/redo.
  
• Auto Switch behaves properly even when no translation and rotation drivers are declared.
  
• Non-default Units of Measurement are now supported.
  
• Now the drivers are properly restored after time changes.
• Command has been updated with masking related flags.
• Added the plugNumber, constraintMemberName and isNodeConnected flags to the command.
• Online documentation has been updated and expanded.
• Windows Installer now does a better job to show the right installation path.