ActivePerl 5.16.3 Build 1604 (x64 版) がリリースされていました。

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Build 1604 April, 2014

Build 1604 is based on Perl 5.18.2 plus additional selected changes.

This is a security update which upgrades openssl to address TLS heartbeat vulnerability (CVE-2014-0160) and an Cache Side-channel Attack (CVE-2014-0076).