The Raspberry Pi Zero W (W for wireless) is a new variant of the Raspberry Pi Zero with wireless LAN and Bluetooth.
The specs for the Raspberry Pi Zero W are as follows
1GHz, single-core CPU
512MB RAM
Mini-HDMI port
Micro-USB On-The-Go port
Micro-USB power
HAT-compatible 40-pin header
Composite video and reset headers
CSI camera connector
802.11n wireless LAN
Bluetooth 4.0