Vizio didn't just unveil bright HDR TVs as part of its spring announcements. The electronics giant has launched a trio of home theater systems that bring Dolby Atmos audio to the lineup. The 36-inch 5.1.2, 46-inch 3.1.2 and 46-inch 5.1.4 systems all pack the requisite upward-firing speakers to add a vertical dimension to your movies. Of course, Chromecast support and Bluetooth remain built-in. Vizio hasn't outlined pricing yet, but expects all three Atmos systems to arrive in the summer.