This is the same core JMS than 1.0.11 that include the "Patches definition" version 1.0.9.

This latest "Patches Definition" version 1.0.9 include 3 patches that allow Joomla template to have specific parameters file for each slave site.
With this new patch, it is now possible to use a same template by multiple websites and to give them specific parameters.
Depending on the template, you can for example change the color or other element.
For example with the Joomla JA_Purity template, you can give different colors and many other things to each slave sites.