Steam OS 3.4 is finally here, but it's not without it's issues, we have covered this in a Video guide to show the best of the new update and some of the issues to look out for
You can also check out the top points below for those interested:
Rebased SteamOS on a newer snapshot of Arch Linux
General
Fixed issues with sleep affecting a small number of titles, where specific games would be frozen or exhibit glitchy behavior after waking up
Fixed a performance issue that could cause 100ms hitches during gameplay if adaptive backlight was enabled
Fixed a graphics driver crash when interacting with the map in DEATH STRANDING DIRECTOR'S CUT
Fixed issue with opening file managers if the gamescope session has been restarted
New firmware for Docking Station
Fixes an issue where HDMI 2.0 displays are not detected during wake or boot up
Performance profiles
New option to allow Screen Tearing: at the cost of sometimes displaying partial frames
Changed performance HUD level 2 to use a horizontal layout. It fits in the letterbox space for games running in a 16:9 aspect ratio.
Storage
Re-enabled TRIM for the internal drive as well as supported external storage devices, improving write performance
Added an eject option for removable drives in Settings → Storage
This unmounts the removable drive, it does not physically eject it
External drives formatted as ext4 are now automatically mounted and available for use in Steam
Input
Disabled kernel DualShock 4 and DualSense trackpad → mouse emulation when Steam is running
Fixed input issues with apps such as Street Fighter V, EA app
Fixed Steam Input's action set switching based on cursor visibility in Game mode
Added support for the 8BitDo Ultimate Wireless controller dongle
Fixed a USB crash when using certain controllers such as the Hori Fighting Stick α
Audio
Fixed a case where the default audio device would display "echo-cancel-sink" and audio controls would cease to work correctly