Raspberry Pi Zero 3W and Pi 4 Model A spotted in device trees

Device tree files in Raspberry Pi's Linux kernel reveal upcoming Raspberry Pi Zero 3 W and Pi 4 Model A boards. The Zero 3 W appears to feature the same powerful BCM2711 quad-core processor found in the Pi 4, a significant upgrade from the Zero 2 W's Cortex-A53, along with SPI flash bootloader support and a physical power button. Details about clock speeds and final specifications remain unknown pending official announcement.