Aquaveo Groundwater Modeling System Premium v10.9.5
Aquaveo GMS is a comprehensive groundwater modeling environment with a graphical data preprocessing system. Aquaveo GMS easily interfaces with MODFLOW and a number of other groundwater modeling tools, and provides advanced graphical capabilities for viewing and calibrating simulation results.

What's new: http://www.aquaveo.com/software/gms-whatsnew

Bug fixes: http://xmswiki.com/wiki/GMS:Release_Notes_GMS