Version 2.4.0 of the GNU Privacy Guard has been released. “Exactly 25 years ago the very first release of GnuPG was published. We
are pleased to take this opportunity to announce the availability of a
new stable GnuPG release: version 2.4.0.” Changes in this release
include full support for the key database daemon, some performance
improvements, a change to AES256 as the default cipher, and much more.

Source: LWN.net – GnuPG 2.4.0 released