Raspberry Pi Zero 3 W leaks with the same chip as a Pi 4
Raspberry Pi Zero 3W and Pi 4 Model A spotted in device trees
Device tree files in Raspberry Pi's Linux kernel tree reveal two unannounced boards: a Zero 3 W built around the Broadcom BCM2711 — the quad-core Cortex-A72 SoC that powers the Raspberry Pi 4 — and a Raspberry Pi 4 Model A that drops Ethernet, the second HDMI port and the 3.5mm jack, and may add external antenna switching. No RAM, clocks, pricing or release date yet.
I do wonder how toasty it's going to get though, as the BCM2711 isn't exactly known for running cool, and there's not a lot of board for the heat to spread into.