This is a pre-release version of the Sensor Fusion Toolbox for Windows. It is essentially the same tool you already know and love. It differs in terms of the binary images that can be downloaded to your development board. Clicking File->Flash from the toolbar will present you with a set up updated binaries. These were built using a brand new set of 6- and 9-axis Kalman filter algorithms. We expect these to consume much less power (2X or 3X) and to have better gyro tracking. We are soliciting feedback from existing users of the toolkit with regard to performance of the new filters. We do not expect to formally release until later in Q2, primarily to give the community time to try them and give us feedback. We are not releasing source just yet, for the same reason.