*** Configurable support
Support for C, C++, Objective-C and Java can be more easily configured for additional types and classes via the new variables c-font-lock-extra-types, c++-font-lock-extra-types, objc-font-lock-extra-types and, you guessed it, java-font-lock-extra-types. These value of each of these variables should be a list of regexps matching the extra type names. For example, the default value of c-font-lock-extra-types is ("\\sw+_t") which means fontification follows the convention that C type names end in _t. This results in slower fontification.

Of course, you can change the variables that specify fontification in whatever way you wish, typically by adding regexps. However, these new variables make it easier to make specific and common changes for the fontification of types.