Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I am not sure where the historical record of new features in each EnergyPlus version is (I should know this and I will find out), but for recent releases you can find it at http://energyplus.net/features/. In fact, we have moved most of the content from http://energyplus.gov/ to http://energyplus.net/.
