Hi STM32F103 lovers!
Here are some Maple Compatible boards for developing projects:Discontinued DreamMaple ( Product Link )
Did you see that guy? It's not that bad for STM32 development if you need to use Arduino shields and XBee formed Serial Wireless modules in your project. A month ago DFRobots stopped producing of it. I think STM32 boards still doesn't take enough attention especially by Arduino users. However I see Arduino as a great learning tool while STM32 is needed for one step further projects. You can find this one in DFRobot suppliers if you need.FlyMaple ( Product Link )
If you are going to integrate 10DOF IMU on your project, why don't you use FlyMaple for prototype. Passing to coding quickly will give you some time. I used to have this board and it's so perfectly designed and produced. Consider it as a development board if you need IMU stuff! (+ there is a demo code available)