2021年10月にリリースされたYocto3.4(Honister)の3回目のポイントリリース3.4.3の公開のアナウンスが2022/3/31付けでありました。
2022年3月24日付でコミットされたものがQAを経てリリースとなっています。
3.4.3 ではテストを実施したディストロの追加に関してリリース時のpoky.conf には記載されていません。
また、現時点（2022/03/31 14;00）では、新規のコミットは行われていません。

次のポイントリリース3.4.4 は、現時点では公開時期未定となっています。
##追記##
YP 3.4.4 build date 2022/05/02
YP 3.4.4 Release date 2022/05/13

本リリースの詳細は以下のURLでご確認ください。
https://lists.yoctoproject.org/g/yocto-announce/message/242

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Known Issues
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N/A

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Security Fixes
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ghostscript: fix CVE-2021-3781
ghostscript: fix CVE-2021-45949
tiff: Add backports for two CVEs from upstream (CVE-2022-0561 & CVE-2022-0562)
gcc : Fix CVE-2021-46195
virglrenderer: fix CVE-2022-0135 and -0175
binutils: Add fix for CVE-2021-45078

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Fixes
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Revert "cve-check: add lockfile to task"
asciidoc: update git repository
bitbake: build: Tweak exception handling for setscene tasks
bitbake: contrib: Fix hash server Dockerfile dependencies
bitbake: cooker: Improve parsing failure from handled exception usability
bitbake: data_smart: Fix overrides file/line message additions
bitbake: fetch2: ssh: username and password are optional
bitbake: tests/fetch: Handle upstream master -> main branch change
bitbake: utils: Ensure shell function failure in python logging is correct
build-appliance-image: Update to honister head revision
build-appliance-image: Update to honister head revision
coreutils: remove obsolete ignored CVE list
crate-fetch: fix setscene failures
cups: Add --with-dbusdir to EXTRA_OECONF for deterministic build
cve-check: create directory of CVE_CHECK_MANIFEST before copy
cve-check: get_cve_info should open the database read-only
default-distrovars.inc: Switch connectivity check to a yoctoproject.org page
depmodwrapper-cross: add config directory option
devtool: deploy-target: Remove stripped binaries in pseudo context
devtool: explicitly set main or master branches in upgrades when available
docs: fix hardcoded link warning messages
documentation: conf.py: update for 3.4.2
documentation: prepare for 3.4.3 release
expat: Upgrade to 2.4.7
gcc-target: fix glob to remove gcc-<version> binary
gcsections: add nativesdk-cairo to exclude list
go: update to 1.16.15
gst-devtools: 1.18.5 -> 1.18.6
gst-examples: 1.18.5 -> 1.18.6
gstreamer1.0-libav: 1.18.5 -> 1.18.6
gstreamer1.0-omx: 1.18.5 -> 1.18.6
gstreamer1.0-plugins-bad: 1.18.5 -> 1.18.6
gstreamer1.0-plugins-base: 1.18.5 -> 1.18.6
gstreamer1.0-plugins-good: 1.18.5 -> 1.18.6
gstreamer1.0-plugins-ugly: 1.18.5 -> 1.18.6
gstreamer1.0-python: 1.18.5 -> 1.18.6
gstreamer1.0-rtsp-server: 1.18.5 -> 1.18.6
gstreamer1.0-vaapi: 1.18.5 -> 1.18.6
gstreamer1.0: 1.18.5 -> 1.18.6
harfbuzz: upgrade 2.9.0 -> 2.9.1
initramfs-framework: unmount automounts before switch_root
kernel-devsrc: do not copy Module.symvers file during install
libarchive : update to 3.5.3
libpcap: Disable DPDK explicitly
libxml-parser-perl: Add missing RDEPENDS
linux-firmware: upgrade 20211216 -> 20220209
linux-yocto/5.10: Fix ramoops/ftrace
linux-yocto/5.10: features/zram: remove CONFIG_ZRAM_DEF_COMP
linux-yocto/5.10: fix dssall build error with binutils 2.3.8
linux-yocto/5.10: ppc/riscv: fix build with binutils 2.3.8
linux-yocto/5.10: update genericx86* machines to v5.10.99
linux-yocto/5.10: update to v5.10.103
mc: fix build if ncurses have been configured without wide characters
oeqa/buildtools: Switch to our webserver instead of example.com
patch.py: Prevent git repo reinitialization
perl: Improve and update module RPDEPENDS
poky.conf: bump version for 3.4.3 honister release
qemuboot: Fix build error if UNINATIVE_LOADER is unset
quilt: Disable external sendmail for deterministic build
recipetool: Fix circular reference in SRC_URI
releases: update to include 3.3.5
releases: update to include 3.4.2
rootfs-postcommands: amend systemd_create_users add user to group check
ruby: update 3.0.2 -> 3.0.3
scripts/runqemu-ifdown: Don't treat the last iptables command as special
sdk: fix search for dynamic loader
selftest: recipetool: Correct the URI for socat
sstate: inside the threadedpool don't write to the shared localdata
uninative: Upgrade to 3.5
util-linux: upgrade to 2.37.4
vim: Update to 8.2.4524 for further CVE fixes
wic: Use custom kernel path if provided
wireless-regdb: upgrade 2021.08.28 -> 2022.02.18
zip: modify when match.S is built