Some things to notice about S908U1UEU2AVDC:
- The bootloader number has incremented, so you can't roll back to a previous version if you have problems with this one.
- The U (rather than S) just before the bootloader number tells us that this isn't just a security update. However, the release notes lack the usual terse summary of what has changed (there's only the section that describes what can be included in software updates in general).
- As always, you can see a list of the latest firmware versions for all carriers on Sammobile.com. If you have a carrier-unlocked phone and your carrier hasn't released it yet, you can download any carrier's version using Frija and install it manually using Odin.