The new Fire Tablets will run on Android 11

Another feature that people will notice is the system-wide dark mode. This is a welcome change, as modern Android and iOS can do this already. When enabled, the background in the system and some apps will go dark. Other than that, the software will mostly have background changes. For starters, the new tablets will gain HEIF and Direct Share. Some features present in Vanilla Android like File-Based Encryption aren’t available in Fire OS 8, however.