What has changed:
- Wifi Built-in – IEEE 802.11b/g support
- A maximum transmit and receive rate of 150 Mbps
- Supports both 20 MHz and 40 MHz channels
- Supports Infrastructure mode, Wi-Fi Direct and soft-AP mode
- Supports WPA, WPA2 (802.11i), AES/TKIP, IEEE 802.1X and WAPI
- A maximum transmission power 15 dbm
- Operating Frequency 2.4 MHz – 2.497 MHz
- Bluetooth Built-in
- New System on chip (BCM2837 reported to be 1.5x speed of previous gen)
- Chip is now 64bit ARMv8 QUAD Core 64bit processor
What is the same:
- Same USB/Ethernet controller
- Same form factor
- Same GPIO
