For firmware/software releases, the official wiki is always the primary source. Different community channels then share announcements with key highlights from wiki afterward.
There’s already a pinned summary topic on the forum, so I don’t usually start a new thread for each release: About Snapmaker Orca/APP/Firmware Update！
Z offset is usually suggested when hardware has been modified, such as first assembly, or replacing the nozzle/hotend. (Changing the build plate surface is also a hardware change, but offset compensation is already handled in the start G-code, so manual adjustment isn’t needed.)
When first-layer print quality issues arise in daily use, the first steps would be to check the build plate for contamination and verify that the bed mesh is still accurate. Heatbed leveling and toolhead-offset calibration are typically sufficient in most cases, so Z offset shouldn’t be the first thing to change. Only if the problem persists after those checks would special Z offset tuning be considered as a last resort.