What -v reports is the main release of Perl that your copy is a patched copy of. What -V reports is information about the source you started with, and a summary of key configuration information, including patches made to that original.

ActiveState started with 5.6.0 and applied a number of bug fixes. One of which fixed the above bug. But still it reports the version as 5.6.0 becaue that is the mainstream release it is derived from.

Does that make sense?