MSI's packaging and general design philosophy for Z170 follows a new “grading” system compared to Z97.
The Z170A Tomahawk is “Arsenal Gaming” level (4 Stars) compared to something like the XPower Titanium or Gaming M5/M7 which are “Enthusiast Gaming” level (7 Stars) or the Krait Gaming and Gaming Pro Carbon which are “Performance Gaming” level (5 Stars). By product positioning the Z170A Tomahawk is MSI's entry-level Gaming series.
Entry-level it may be, but it's still a feature packed board with USB 3.1, a debug LED system, dual M.2 ports, red LED lighting and more.
The accessory pack is run of the mill for the price point, you get a labelled rear I/O shield, two SATA cables, some documentation, a driver DVD and cable labels.