UML - version 1.4 & ver 2 dev
Version (2): 
UML for version 1.4 (see OpenMI documentation index)
Unchanged interfaces
IArgument
IDimension
IListener
IManageState
IPublisher
ISpatialReference
ITime
ITimeSpan
ITimeStamp
IUnit
Removed interfaces
IDiscreteTimes
IEvent
ILink
IOutputExchangeItem
IScalarSet
IValueSet
IVector
IVectorSet
IInputExchangeItem
Added interfaces
Modified interfaces
IDataOperation
Removed: void Initialize(IArgument[] properties)
Removed: string ID {get;}
Removed: int ArgumentCount {get;}
Removed: IArgument GetArgument(int argumentIndex)
Removed: bool IsValid(...)
Changed: public interface IDataOperation --> public interface IDataOperation : IExchangeItem
IElementSet
Removed: ElementType XYLine and XYZLine
IEvent
Changed: ILinkableComponent Sender {get;} ---> IPublisher Sender {get;}
IExchangeItem
Added: string Caption { get; }
Added: string Description { get; }
Added: List<ITime> DiscreteTimes { get; }
Added: object GetValues (ITime time);
Added: IExchangeItem Provider { get; set; }
Added: ReadOnlyCollection<IExchangeItem> Consumers { get; }
Added: void AddConsumer(IExchangeItem consumer);
Added: void RemoveConsumer(IExchangeItem consumer);
ILinkableComponent
Removed: IInputExchangeItem GetInputExchangeItem(int inputExchangeItemIndex);
Removed: IOutputExchangeItem GetOutputExchangeItem(int outputExchangeItemIndex);
Removed: int InputExchangeItemCount {get;}
Removed: void AddLink (ILink link);
Removed: int OutputExchangeItemCount {get;}
Removed: void RemoveLink(string linkID);
Removed: ITimeStamp EarliestInputTime {get;}
Added: void Update(ITimeStamp timeStamp);
Added: List<IDataOperation> GetAvailableDataOperations(IExchangeItem sourceItem, IExchangeItem targetItem);
Added: List<IExchangeItem> InputItems { get; }
Added: List<IExchangeItem> OutputItems { get; }
Added: void Initialize(IArgument[] properties);
Added: IValueSet GetValues(ITime time, string linkID);
Changed: string ModelID {get;} ---> string InstanceID { get; }
Changed: string ModelDescription {get;} ---> string InstanceDescription { get; }
IQuantity
Removed: public enum ValueType : int
Removed: ValueType ValueType {get;}
