looks like the guys at TI also liked my idea (or at least had a similiar one) of the C3ii INS Booster Pack: http://e2e.ti.com/group/microcontrollerprojects/m/msp430microcontrollerprojects/664688.aspx
TI now offers a Sensor Hub Booster Pack BOOSTXL-SENSHUB which features the same senors (Invensense MPU-9150 and Bosch Sensortec BMP180) and - in addition - adds some more. They also added the EM-connector which allows to connect a GPS or WiFi to the board.
The BOOSTXL-SENSHUB (http://www.ti.com/tool/boostxl-senshub) sells for $49.99 and is (at the time of writing) available at the TI eStore. Get one until stock lasts!
I just placed my order at the TI eStore and now want to know were to find the related documentation
EDIT: Since the software documentation is part of SW-EK-TM4C123GXL (http://www.ti.com/tool/sw-ek-tm4c123gxl) I'm only missing the hardware documentation/users manual!
P.S. Too bad that I couldn't participate in the last TI Booster Pack design challange!