From the box:

The Star Wars Vehicles Starter Set adds a new dimension to your Star Wars Miniatures Battles games with vehicle combat rules, vehicle miniatures and advanced game scenarios. Do you have what it takes to lead your troops to victory?

Basically a repackaging of the Star Wars Miniatures Battles Companion, West End added some sample miniatures and dice to round out this boxed set.

Includes:

Star Wars Miniatures Battles Companion
Rebel snow speeder miniature
Speeder bike w/ Rebel pilot miniature
Speeder bike w/ Imperial pilot miniature
5 6-sided dice

Expands:

• Star Wars Miniatures Battles