They always keep VERY up to date with the kernel main line. But i see no specific commit for pi0-W
Most probably everything is "more or less ready" in the current firmware + dtb. Wait and see ^^
Also looks like their next kernel will be 4.9
For information, Recalbox IS NOT compatible with Raspberry Pi 4 yet.
Pour information, Recalbox N'EST PAS encore compatible avec le Raspberry Pi 4.
The Recalbox Team.
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