Overview
This is Pi Zero 2 W with Pre-Soldered Color-Coded Header. At the heart of Pi Zero 2 W is RP3A0, a custom-built system-in-package designed by RPi in the UK.
With a quad-core 64-bit ARM Cortex-A53 processor clocked at 1GHz and 512MB of SDRAM, Zero 2 is up to five times as fast as the predecessor RPi Zero.
As for heat dissipation concern, Zero 2 W uses thick internal copper layers to conduct heat away from the processor, sustaining higher performance without higher temperature.

Key features include:

Broadcom BCM2710A1, 1GHz quad-core 64-bit Arm Cortex-A53 CPU
512MB LPDDR2 SDRAM
2.4GHz 802.11 b/g/n wireless LAN
Bluetooth 4.2, Bluetooth Low Energy (BLE), onboard antenna
Mini HDMI port and micro USB On-The-Go (OTG) port
microSD card slot
CSI-2 camera connector
HAT-compatible 40-pin header footprint (unpopulated)
Micro USB power
Composite video and reset pins via solder test points
H.264, MPEG-4 decode (1080p30); H.264 encode (1080p30)
OpenGL ES 1.1, 2.0 graphics

Package Content
Pi Zero 2 W with Color Pre Soldered Header x1