The new Raspberry Pi 3 B+ offers a faster processor, dual-band WiFi, Gigabit ethernet and Bluetooth 4.2 for the same price as the base model 3.
Oak is a new board by DigiStump. Compatible with Arduino, it features in-built WiFi and a tiny size, perfect for embedded projects.
The DigiX is an Arduino Due compatible board, with more I/O pins, WiFi, RTC, USB OTG, and audio support with an on-board socket.
The Spark Core is a tiny Wi-Fi enabled developing board based on the idea of the Arduino enabling you to easily port projects.
The Arduino Yún (which means "cloud" in Chinese), is the first in a new family of WiFi boards combining Arduino and Linux.