As we mentioned a few months back, these two games are something akin to spin-offs of an upcoming Sonic the Hedgehog animated series. At the very least, they share the Sonic Boom name, as well as its overarching universe and its aesthetic style. According to Sega, Sonic Boom: Rise of Lyric (a Wii U game in development at Big Red Button), will feature a detailed world and offer players a modern, action-adventure gaming experience. Sonic Boom: Shattered Crystal (the 3DS iteration being crafted by Sanzaru Games), on the other hand, will lean more toward platforming, like classic Sonic games.
Both Sonic Boom: Rise of Lyric and Sonic Boom: Shattered Crystal are currently slated to debut in November. More information on both games should be available at E3, where Sega claims each will be available for attendees to play.