I think the development team has worked hard and has done a great job with this version of Blender 3D software.
Here are some of the issues solved:
The new 2.79b is a Corrective Release
This corrective release only fixes a few serious bugs/regressions introduced in 2.79a fixes.
- Due to various issues with drivers for AMD GCN 1.0 architecture, those cards are no longer supported for Cycles rendering
- When using add-ons in Blender 2.79 that take advantage of the new data-block pointer properties, the resulting .blend files can't be opened in earlier versions of Blender. Attempting to open such .blend files in Blender 2.78c and earlier may crash.
- Some Interface Themes may need to be reloaded to work properly.
- The text color contained in layout.box() is now defined in User Preferences, Themes, Box section
- Rig compatibility:
- Changes to IK snapping may affect rigs that use non-uniform IK scaling. (rigs created in the 2.78 builds.)
- During the 2.78 series: IK snapping was partly broken.
- This has been fixed for Blender 2.79
- Rigs created in Blender 2.78 may not be compatible with 2.79.
- Rigs created in Blender 2.77 may still work.
- When using the add-on Rigify, please note:
- Compatibility is broken for this release. There's no guarantee rigs created in previous Blender versions will work correctly.
- Rigs created in Blender 2.78 may not be compatible with 2.79.
- Rigs created in Blender 2.77 may still work.
- Save your work before attempting upgrading your rigs.
