What’s New > Windchill > 12.0.0.0 > End User > License Profile: Allow Product Revise from Change Task Only
  
License Profile: Allow Product Revise from Change Task Only
Product: Windchill
Release: 12.0.0.0
Summary
You can now use the profile action, Revise Outside Change Task to disable or hide Revise actions from Windchill toolbar except from a change task for a Windchill user. This helps in enhancing the productivity by ensuring that the product revise are planned.