There is new Routerboard : RB411R
I missed this one – thanks to lukasz2
rb411ar
Here are board specifications :
Mikrotik RouterBOARD 411 with 300MHz Atheros AR7130 CPU, 32MB DDR RAM, 1 LAN, 1 miniPCI, 64MB NAND with RouterOS L3, and integrated radio.
Supports POE: 10 to 28vdc on unused pairs (no power over datalines), or 10-28vdc power jack support. Overall dimensions: 105mm x 105mm (4.13in x 4.13in).
Expected price is around 70 USD