Version 3 (ORM2_Draw2v3) adds an objectified unary, connection points on the subtype connector (thanks for the great suggestion, Brice!), and greater range on the adjustable-arity fact types (they adjust down to 2 roles intead of 4).
The ORM2_Draw2 Visio stencil for ORM diagrams is an updating and upgrading of the ORM2_Draw Visio stencil which itself resulted from ORM stencil development by various people, including Peter Ritson, Terry Halpin, and Andy Carver. It is an updating in that it updates (for Visio 11, 12, and ff.) the Table shape, and includes the deontic constraints and value-comparison constraints. It is an upgrading in that it adds built-in shadowing (for fact types and object types), built-in text-arrows (for fact types), built-in constraint-connectors, and some adjustable-arity fact types, as well as several relatively minor upgrades and fixes, including a frequency constraint.
Version 1's stencil (.vss) and template (.vst) files were created, based on ORM2_Draw, during the Winter of 2008-9, by Andy Carver with the help and supervision of Dr. Terry Halpin. The files have been tested and used pretty extensively in both Visio 10 and Visio 12. A readme.txt file is included.
Latest ReadMe text-file date: 12-29-09. (Added clarification on installation issues, especially for Visio 12, and instructions on how to make an older diagram open with a newer-version stencil.)