Sega Blog made a post today showing off the boxart for the Wii U and 3DS versions of Sonic Boom. Sonic Boom Shattered Crystal for the 3DS will be released on November 11th and Sonic Boom Rise of Lyric will be out on November 18th.
You’ll notice that the boxarts are slightly different. For example, you’ll notice Amy Rose is not in the 3DS cover but instead you’ll see the new character Sticks. The backgrounds for both versions is also different as you can see the 3DS version looks more like they’re in a forest and the Wii U version the heroes are placed in a swamp like area.