Atmel and Redpine have announced a collaboration on low power 802.11n Wi-Fi. This allows easy connectivity to the Atmel AVR XMEGA, AVR UC3, SAM3 and SAM9 MCU families. Two options were presented, the Connect-io-n modules, with integrated TCP/IP stack, and the n-Link module, for high-performance with a host-managed stack. UART, SPI and SDIO interfacers, with up to 65Mbps of WiFi data throughput were presented.
For further details, see here.