Hi there,
For over 5 years now, OPNsense is driving innovation through modularising and hardening the open source firewall, with simple and reliable firmware upgrades, multi-language support, HardenedBSD security, fast adoption of upstream software updates as well as clear and stable 2-Clause BSD licensing.
20.1, nicknamed "Keen Kingfisher", is a subtle improvement on sustainable firewall experience. This release adds VXLAN and additional loopback device support, IPsec public key authentication and elliptic curve TLS certificate creation amongst others. Third party software has been updated to their latest versions. The logging frontend was rewritten for MVC with seamless API support. On the far side the documentation increased in quality as well as quantity and now presents itself in a familiar menu layout.
Download links, an installation guide[1] and the checksums for the images can be found below as well.
o Europe: https://opnsense.c0urier.net/releases/20.1/
o US East Coast: http://mirrors.nycbug.org/pub/opnsense/releases/20.1/
o US West Coast: https://mirror.sfo12.us.leaseweb.net/opnsense/releases/20.1/
o South America: http://mirror.upb.edu.co/opnsense/releases/20.1/
o South-East Asia: https://ftp.yzu.edu.tw/opnsense/releases/20.1/
o Full mirror list: https://opnsense.org/download/
These are the most prominent changes since version 19.7:
o Captive portal performance improvements
o IPsec public key authentication support
o Elliptic curve TLS certificate creation
o CARP service demotion hook
o VXLAN device support
o Loopback device support
o Extended firmware health audit checks
o Support direction and non-quick on interface rules
o Logging frontend migrated to MVC / API
o PSR 12 coding style
o Documentation for all core components
o Python 3.7 is now the default Python version
o LibreSSL 3.0 and OpenSSL 1.1.1
o Google Backup API 2.4
o jQuery 3.4.1
And here are the full patch notes against version 20.1-RC1:
o installer: welcome users as genuine 20.1 installer
o rc: revert growfs change since Nano does not grow anymore
o plugins: os-mail-backup 1.1[2]
o plugins: os-nrpe 1.0 (contributed by Michael Muenz)
o plugins: os-theme-rebellion 1.8.3 (contributed by Team Rebellion)
o plugins: os-vnstat 1.2[3]
o plugins: zabbix4-proxy 1.2[4]
o ports: ca_root_nss 3.49.2
o ports: curl 7.68.0[5]
o ports: isc-dhcp 4.4.2[6]
o ports: php 7.2.27[7]
o ports: urllib3 1.27.7[8]
Known issues and limitations:
o HardenedBSD 12.1 has been postponed to the next major release
o Legacy MPD5 plugins os-l2tp, os-pppoe and os-pptp have been deprecated and will no longer receive updates
o To prevent stale configuration files for remote syslog we advise to setup the new targets first[9] and disable the old ones under System: Settings: Logging
o i386 has not been deprecated for the time being 
The public key for the 20.1 series is:
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
Stay safe,
Your OPNsense team
--
[1] https://docs.opnsense.org/manual/install.html
[2] https://github.com/opnsense/plugins/pull/1671
[3] https://github.com/opnsense/plugins/blob/master/net/vnstat/pkg-descr
[4] https://github.com/opnsense/plugins/blob/master/net-mgmt/zabbix4-proxy/pkg-descr
[5] https://curl.haxx.se/changes.html
[6] https://downloads.isc.org/isc/dhcp/4.4.2/dhcp-4.4.2-RELNOTES
[7] https://www.php.net/ChangeLog-7.php#7.2.27
[8] https://github.com/urllib3/urllib3/blob/master/CHANGES.rst#1257-2019-11-11
[9] https://docs.opnsense.org/manual/settingsmenu.html#logging-targets
SHA256 (OPNsense-20.1-OpenSSL-dvd-amd64.iso.bz2) = 4b15e9b3d72732d325c5eaf46ba34575d4de8cdc3e3ac1b10666c7372563be6d
SHA256 (OPNsense-20.1-OpenSSL-nano-amd64.img.bz2) = 27544a78ae03d480a483cfd2e7cfa703b60e50938a1ed188ec3ccde6c426fefe
SHA256 (OPNsense-20.1-OpenSSL-serial-amd64.img.bz2) = f93bbcbe92059c5de49f22d485da292952b48658a28d1cdaf83191e8c95c03c2
SHA256 (OPNsense-20.1-OpenSSL-vga-amd64.img.bz2) = 019a877c4b4cb96cfda62d041774a91c030c5a8ecd58f8c3fd0067c7ac392982
SHA256 (OPNsense-20.1-OpenSSL-dvd-i386.iso.bz2) = 36146d0a066d9d696433599487e2a538ee5575a6b3d631293ad9e14e5fbbc6e0
SHA256 (OPNsense-20.1-OpenSSL-nano-i386.img.bz2) = 0980f49d1b3445505fd1db27ab070886a706388d3aa16d7c8d953f279b7e3b11
SHA256 (OPNsense-20.1-OpenSSL-serial-i386.img.bz2) = 322adbafe331ef7232c08d839a6f355ee633f5a662009b1801ebad0edab03d73
SHA256 (OPNsense-20.1-OpenSSL-vga-i386.img.bz2) = 8bdd109015d7d54d382c7293bdf8fac6397a6c2e37662b73647c276e98c19d64