Envision™ is an evolving work in progress. It will be updated and revised on a regularly scheduled basis as we learn more about how it works in the field, as the science changes and as users suggest ways to make it more effective.

Please log into the Envision™ rating tool and comment on your experience with the tool and to suggest ways in which we can improve its value to you. All comments and suggestion will be referred to an ISI committee for consideration and evaluation.

Major changes to Envision™ will occur according to a prearranged schedule, but errors and small changes will be included as we identify them. Additional modules, such as the Stage I Self Assessment Tool, and construction and operation phases for the Stage II Tool will be made available as they become ready.

The next full-scale revision to Envision™ is currently scheduled for January 2013.