The Codeblocks-EP page tells you what it is. Of course it is the same IDE as Code::Blocks 10.05, just a more recent version of the same software. It is only the set up that is special, with features that make it easier to learn programming.
It is used by several colleges and universities.
The main differences are this:
Codeblocks-EP adds programmer's help, simple 2D graphic libraries, a more recent (and more standards-compliant) version of the MinGW GCC compiler, useful tools, portability, so you can carry it around on a usb stick or portable HDD, etc...
Mostly it promotes good standards in C and in C++ by having strict compiler flags set by default in projects. This means that by default it will raise errors or warnings if you use C syntax that is not valid, whereas 10.05 will let you get away by default with using GNU extensions and other invalid C constructs.