The publication dates for the BDI-2, BDI-2 NU, and BDI-3 are listed below: 


BDI-2: Newborg, J. (2005). Battelle Developmental Inventory, 2nd Edition. Itasca, IL: Riverside Assessments, LLC 


BDI-2 NU: Newborg, J. (2016). Battelle Developmental Inventory, 2nd Edition Normative Update. Itasca, IL: Riverside Assessments, LLC. 


BDI-3: Newborg, J. (2020). Battelle Developmental Inventory, 3rd Edition. Riverside Assessments, LLC 


Click the link below for more information about the BDI-2 and BDI-3


BDI-2 NU 

BDI-3