GemStone/S 64 Bit v3.7 is a major release with many optimizations, improvements, and new features.

GemBuilder for Smalltalk v8.7 is a maintenance release that adds support for GS/64 v3.7 as well as providing bug fixes.

VSD v5.6.1 is a maintenance release containing several bug fixes.

For more details, see the individual product pages, GemStone/S 64 Bit v3.7, GemBuilder for Smalltalk/VW v8.7, and VSD v5.6.1.