Using extra command-line options or other modules to find out if it is the latest or not doesn't seem so convenient.
And its something you absolutely do not have to do. cpan Wx always installs the latest version as reported by the module list (highest version number by a co-maintainer).
In reply to Re^3: Uploading a new version as a CPAN maintainer
by Anonymous Monk
in thread Uploading a new version as a CPAN maintainer
by stevieb
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